25697422772 has 48 divisors (see below), whose sum is σ = 53227819008. Its totient is φ = 10627004640.

The previous prime is 25697422771. The next prime is 25697422811. The reversal of 25697422772 is 27722479652.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25697422771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44078 + ... + 230949.

It is an arithmetic number, because the mean of its divisors is an integer number (1108912896).

Almost surely, 2^25697422772 is an apocalyptic number.

It is an amenable number.

25697422772 is an abundant number, since it is smaller than the sum of its proper divisors (27530396236).

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

25697422772 is a wasteful number, since it uses less digits than its factorization.

25697422772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275156 (or 275154 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 53.

The spelling of 25697422772 in words is "twenty-five billion, six hundred ninety-seven million, four hundred twenty-two thousand, seven hundred seventy-two".