25157169216 has 70 divisors (see below), whose sum is σ = 74573745950. Its totient is φ = 8385721344.

The previous prime is 25157169161. The next prime is 25157169223. The reversal of 25157169216 is 61296175152.

It is a happy number.

25157169216 is a `hidden beast` number, since 2 + 5 + 1 + 571 + 69 + 2 + 16 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16927050816 + 8230118400 = 130104^2 + 90720^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2421241 + ... + 2431608.

Almost surely, 2^25157169216 is an apocalyptic number.

It is an amenable number.

25157169216 is an abundant number, since it is smaller than the sum of its proper divisors (49416576734).

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

25157169216 is an equidigital number, since it uses as much as digits as its factorization.

25157169216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4852873 (or 4852854 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The spelling of 25157169216 in words is "twenty-five billion, one hundred fifty-seven million, one hundred sixty-nine thousand, two hundred sixteen".