25817726016 has 42 divisors (see below), whose sum is σ = 74001851742. Its totient is φ = 8605908480.

The previous prime is 25817726009. The next prime is 25817726017. The reversal of 25817726016 is 61062771852.

25817726016 is a `hidden beast` number, since 2 + 581 + 7 + 7 + 2 + 60 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19143489600 + 6674236416 = 138360^2 + 81696^2 .

It is not an unprimeable number, because it can be changed into a prime (25817726017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22410645 + ... + 22411796.

It is an arithmetic number, because the mean of its divisors is an integer number (1761948851).

Almost surely, 2^25817726016 is an apocalyptic number.

It is an amenable number.

25817726016 is an abundant number, since it is smaller than the sum of its proper divisors (48184125726).

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

25817726016 is a wasteful number, since it uses less digits than its factorization.

25817726016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44822459 (or 44822446 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 25817726016 in words is "twenty-five billion, eight hundred seventeen million, seven hundred twenty-six thousand, sixteen".