20125600636264 has 8 divisors (see below), whose sum is σ = 37735501193010. Its totient is φ = 10062800318128.

The previous prime is 20125600636259. The next prime is 20125600636319. The reversal of 20125600636264 is 46263600652102.

It can be written as a sum of positive squares in only one way, i.e., 14695032228100 + 5430568408164 = 3833410^2 + 2330358^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20125600636264.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1257850039759 + ... + 1257850039774.

Almost surely, 2^{20125600636264} is an apocalyptic number.

It is an amenable number.

20125600636264 is a deficient number, since it is larger than the sum of its proper divisors (17609900556746).

20125600636264 is a wasteful number, since it uses less digits than its factorization.

20125600636264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515700079539 (or 2515700079535 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 20125600636264 in words is "twenty trillion, one hundred twenty-five billion, six hundred million, six hundred thirty-six thousand, two hundred sixty-four".