25630551416 has 16 divisors (see below), whose sum is σ = 48166760400. Its totient is φ = 12786081984.

The previous prime is 25630551413. The next prime is 25630551437. The reversal of 25630551416 is 61415503652.

It is a self number, because there is not a number n which added to its sum of digits gives 25630551416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25630551413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3645485 + ... + 3652508.

It is an arithmetic number, because the mean of its divisors is an integer number (3010422525).

Almost surely, 2^25630551416 is an apocalyptic number.

It is an amenable number.

25630551416 is a deficient number, since it is larger than the sum of its proper divisors (22536208984).

25630551416 is a wasteful number, since it uses less digits than its factorization.

25630551416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7298438 (or 7298434 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 25630551416 in words is "twenty-five billion, six hundred thirty million, five hundred fifty-one thousand, four hundred sixteen".