1223254516 has 48 divisors (see below), whose sum is σ = 2533047552. Its totient is φ = 510540800.

The previous prime is 1223254441. The next prime is 1223254519. The reversal of 1223254516 is 6154523221.

It is a super-5 number, since 5×1223254516⁵ (a number of 47 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223254519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10725 + ... + 50611.

It is an arithmetic number, because the mean of its divisors is an integer number (52771824).

Almost surely, 2^1223254516 is an apocalyptic number.

It is an amenable number.

1223254516 is an abundant number, since it is smaller than the sum of its proper divisors (1309793036).

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

1223254516 is a wasteful number, since it uses less digits than its factorization.

1223254516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39960 (or 39958 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 1223254516 is about 34975.0556254025. The cubic root of 1223254516 is about 1069.4790359962.

Adding to 1223254516 its reverse (6154523221), we get a palindrome (7377777737).

The spelling of 1223254516 in words is "one billion, two hundred twenty-three million, two hundred fifty-four thousand, five hundred sixteen".