25797812004 has 108 divisors (see below), whose sum is σ = 67814423040. Its totient is φ = 8260408800.

The previous prime is 25797811997. The next prime is 25797812071. The reversal of 25797812004 is 40021879752.

It is a happy number.

25797812004 is a `hidden beast` number, since 2 + 579 + 78 + 1 + 2 + 0 + 0 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 82951009 + ... + 82951319.

Almost surely, 2^25797812004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25797812004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33907211520).

25797812004 is an abundant number, since it is smaller than the sum of its proper divisors (42016611036).

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

25797812004 is a wasteful number, since it uses less digits than its factorization.

25797812004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 586 counting only the distinct ones).

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

The spelling of 25797812004 in words is "twenty-five billion, seven hundred ninety-seven million, eight hundred twelve thousand, four".