25625631678 has 8 divisors (see below), whose sum is σ = 51251263368. Its totient is φ = 8541877224.

The previous prime is 25625631667. The next prime is 25625631697. The reversal of 25625631678 is 87613652652.

It is a sphenic number, since it is the product of 3 distinct primes.

25625631678 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 25625631678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135469301 + ... + 2135469312.

It is an arithmetic number, because the mean of its divisors is an integer number (6406407921).

Almost surely, 2^25625631678 is an apocalyptic number.

25625631678 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

25625631678 is a wasteful number, since it uses less digits than its factorization.

25625631678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4270938618.

The product of its digits is 3628800, while the sum is 51.

The spelling of 25625631678 in words is "twenty-five billion, six hundred twenty-five million, six hundred thirty-one thousand, six hundred seventy-eight".