25690686832 has 40 divisors (see below), whose sum is σ = 52444214784. Its totient is φ = 12167542464.

The previous prime is 25690686821. The next prime is 25690686851. The reversal of 25690686832 is 23868609652.

It is a super-2 number, since 2×25690686832² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300988 + ... + 376795.

Almost surely, 2^25690686832 is an apocalyptic number.

It is an amenable number.

25690686832 is an abundant number, since it is smaller than the sum of its proper divisors (26753527952).

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

25690686832 is a wasteful number, since it uses less digits than its factorization.

25690686832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677917 (or 677911 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 55.

The spelling of 25690686832 in words is "twenty-five billion, six hundred ninety million, six hundred eighty-six thousand, eight hundred thirty-two".