1205454525131 has 2 divisors, whose sum is σ = 1205454525132. Its totient is φ = 1205454525130.

The previous prime is 1205454525127. The next prime is 1205454525139. The reversal of 1205454525131 is 1315254545021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1205454525131 - 2² = 1205454525127 is a prime.

It is a super-2 number, since 2×1205454525131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1205454525139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602727262565 + 602727262566.

It is an arithmetic number, because the mean of its divisors is an integer number (602727262566).

Almost surely, 2^{1205454525131} is an apocalyptic number.

1205454525131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205454525131 is an equidigital number, since it uses as much as digits as its factorization.

1205454525131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120000, while the sum is 38.

The spelling of 1205454525131 in words is "one trillion, two hundred five billion, four hundred fifty-four million, five hundred twenty-five thousand, one hundred thirty-one".