1205454525044 has 72 divisors (see below), whose sum is σ = 2679340093920. Its totient is φ = 469255550400.

The previous prime is 1205454525029. The next prime is 1205454525047. The reversal of 1205454525044 is 4405254545021.

It is a super-2 number, since 2×1205454525044² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1205454524992 and 1205454525010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205454525047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2285942 + ... + 2763410.

It is an arithmetic number, because the mean of its divisors is an integer number (37213056860).

Almost surely, 2^{1205454525044} is an apocalyptic number.

1205454525044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1205454525044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339670046960).

1205454525044 is an abundant number, since it is smaller than the sum of its proper divisors (1473885568876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1205454525044 is a wasteful number, since it uses less digits than its factorization.

1205454525044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478669 (or 478660 counting only the distinct ones).

The product of its (nonzero) digits is 640000, while the sum is 41.

The spelling of 1205454525044 in words is "one trillion, two hundred five billion, four hundred fifty-four million, five hundred twenty-five thousand, forty-four".