25654709832 has 32 divisors (see below), whose sum is σ = 65870203200. Its totient is φ = 8320446144.

The previous prime is 25654709791. The next prime is 25654709833. The reversal of 25654709832 is 23890745652.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (25654709833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14444332 + ... + 14446107.

It is an arithmetic number, because the mean of its divisors is an integer number (2058443850).

Almost surely, 2^25654709832 is an apocalyptic number.

It is an amenable number.

25654709832 is an abundant number, since it is smaller than the sum of its proper divisors (40215493368).

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

25654709832 is a wasteful number, since it uses less digits than its factorization.

25654709832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28890485 (or 28890481 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 51.

The spelling of 25654709832 in words is "twenty-five billion, six hundred fifty-four million, seven hundred nine thousand, eight hundred thirty-two".