125266636513 has 8 divisors (see below), whose sum is σ = 125363427200. Its totient is φ = 125169882768.

The previous prime is 125266636501. The next prime is 125266636519. The reversal of 125266636513 is 315636662521.

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

It is a cyclic number.

It is not a de Polignac number, because 125266636513 - 2²⁵ = 125233082081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125266636519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12325528 + ... + 12335686.

It is an arithmetic number, because the mean of its divisors is an integer number (15670428400).

Almost surely, 2^125266636513 is an apocalyptic number.

It is an amenable number.

125266636513 is a deficient number, since it is larger than the sum of its proper divisors (96790687).

125266636513 is a wasteful number, since it uses less digits than its factorization.

125266636513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18471.

The product of its digits is 1166400, while the sum is 46.

The spelling of 125266636513 in words is "one hundred twenty-five billion, two hundred sixty-six million, six hundred thirty-six thousand, five hundred thirteen".