25697873955 has 32 divisors (see below), whose sum is σ = 44501990400. Its totient is φ = 12587667840.

The previous prime is 25697873953. The next prime is 25697874001. The reversal of 25697873955 is 55937879652.

It is not a de Polignac number, because 25697873955 - 2¹ = 25697873953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25697873953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292311 + ... + 369920.

It is an arithmetic number, because the mean of its divisors is an integer number (1390687200).

Almost surely, 2^25697873955 is an apocalyptic number.

25697873955 is a deficient number, since it is larger than the sum of its proper divisors (18804116445).

25697873955 is a wasteful number, since it uses less digits than its factorization.

25697873955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662451.

The product of its digits is 142884000, while the sum is 66.

The spelling of 25697873955 in words is "twenty-five billion, six hundred ninety-seven million, eight hundred seventy-three thousand, nine hundred fifty-five".