25621058004 has 48 divisors (see below), whose sum is σ = 60336593856. Its totient is φ = 8461555200.

The previous prime is 25621057997. The next prime is 25621058027. The reversal of 25621058004 is 40085012652.

It is a super-2 number, since 2×25621058004² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547239 + ... + 592209.

It is an arithmetic number, because the mean of its divisors is an integer number (1257012372).

Almost surely, 2^25621058004 is an apocalyptic number.

It is an amenable number.

25621058004 is an abundant number, since it is smaller than the sum of its proper divisors (34715535852).

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

25621058004 is a wasteful number, since it uses less digits than its factorization.

25621058004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45416 (or 45414 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 25621058004 in words is "twenty-five billion, six hundred twenty-one million, fifty-eight thousand, four".