25468439904 has 60 divisors (see below), whose sum is σ = 74901981924. Its totient is φ = 8489479104.

The previous prime is 25468439903. The next prime is 25468439911. The reversal of 25468439904 is 40993486452.

25468439904 is a `hidden beast` number, since 2 + 546 + 8 + 4 + 3 + 9 + 90 + 4 = 666.

It is a super-2 number, since 2×25468439904² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25468439903) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4910302 + ... + 4915485.

Almost surely, 2^25468439904 is an apocalyptic number.

25468439904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

25468439904 is an abundant number, since it is smaller than the sum of its proper divisors (49433542020).

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

25468439904 is an equidigital number, since it uses as much as digits as its factorization.

25468439904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9825809 (or 9825792 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 25468439904 in words is "twenty-five billion, four hundred sixty-eight million, four hundred thirty-nine thousand, nine hundred four".