25625628616 has 32 divisors (see below), whose sum is σ = 54935015040. Its totient is φ = 10977821568.

The previous prime is 25625628607. The next prime is 25625628629. The reversal of 25625628616 is 61682652652.

It is a self number, because there is not a number n which added to its sum of digits gives 25625628616.

It is an unprimeable number.

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, 41260 + ... + 230116.

It is an arithmetic number, because the mean of its divisors is an integer number (1716719220).

Almost surely, 2^25625628616 is an apocalyptic number.

It is an amenable number.

25625628616 is an abundant number, since it is smaller than the sum of its proper divisors (29309386424).

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

25625628616 is a wasteful number, since it uses less digits than its factorization.

25625628616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191293 (or 191289 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 49.

The spelling of 25625628616 in words is "twenty-five billion, six hundred twenty-five million, six hundred twenty-eight thousand, six hundred sixteen".