252551113551 has 24 divisors (see below), whose sum is σ = 398497956480. Its totient is φ = 152854117200.

The previous prime is 252551113547. The next prime is 252551113553. The reversal of 252551113551 is 155311155252.

252551113551 is a `hidden beast` number, since 2 + 5 + 2 + 5 + 511 + 135 + 5 + 1 = 666.

It is not a de Polignac number, because 252551113551 - 2² = 252551113547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252551113553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1652835 + ... + 1799156.

It is an arithmetic number, because the mean of its divisors is an integer number (16604081520).

Almost surely, 2^252551113551 is an apocalyptic number.

252551113551 is a deficient number, since it is larger than the sum of its proper divisors (145946842929).

252551113551 is a wasteful number, since it uses less digits than its factorization.

252551113551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452747 (or 3452744 counting only the distinct ones).

The product of its digits is 37500, while the sum is 36.

The spelling of 252551113551 in words is "two hundred fifty-two billion, five hundred fifty-one million, one hundred thirteen thousand, five hundred fifty-one".