25629448878 has 48 divisors (see below), whose sum is σ = 63767059200. Its totient is φ = 7357735440.

The previous prime is 25629448841. The next prime is 25629448891. The reversal of 25629448878 is 87884492652.

25629448878 is a `hidden beast` number, since 2 + 5 + 62 + 94 + 488 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3402598 + ... + 3410121.

It is an arithmetic number, because the mean of its divisors is an integer number (1328480400).

Almost surely, 2^25629448878 is an apocalyptic number.

25629448878 is an abundant number, since it is smaller than the sum of its proper divisors (38137610322).

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

25629448878 is a wasteful number, since it uses less digits than its factorization.

25629448878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6812757 (or 6812754 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 63.

The spelling of 25629448878 in words is "twenty-five billion, six hundred twenty-nine million, four hundred forty-eight thousand, eight hundred seventy-eight".