25624894080 has 64 divisors (see below), whose sum is σ = 81679356000. Its totient is φ = 6833304576.

The previous prime is 25624894069. The next prime is 25624894081. The reversal of 25624894080 is 8049842652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×25624894080² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (25624894081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6671230 + ... + 6675069.

Almost surely, 2^25624894080 is an apocalyptic number.

25624894080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25624894080 is an abundant number, since it is smaller than the sum of its proper divisors (56054461920).

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

25624894080 is a wasteful number, since it uses less digits than its factorization.

25624894080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13346321 (or 13346309 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 48.

The spelling of 25624894080 in words is "twenty-five billion, six hundred twenty-four million, eight hundred ninety-four thousand, eighty".