25299992564 has 48 divisors (see below), whose sum is σ = 58105259520. Its totient is φ = 9338340960.

The previous prime is 25299992563. The next prime is 25299992567. The reversal of 25299992564 is 46529999252.

It is a junction number, because it is equal to n+sod(n) for n = 25299992497 and 25299992506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25299992563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2155802 + ... + 2167505.

It is an arithmetic number, because the mean of its divisors is an integer number (1210526240).

Almost surely, 2^25299992564 is an apocalyptic number.

It is an amenable number.

25299992564 is an abundant number, since it is smaller than the sum of its proper divisors (32805266956).

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

25299992564 is a wasteful number, since it uses less digits than its factorization.

25299992564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4323348 (or 4323346 counting only the distinct ones).

The product of its digits is 31492800, while the sum is 62.

The spelling of 25299992564 in words is "twenty-five billion, two hundred ninety-nine million, nine hundred ninety-two thousand, five hundred sixty-four".