125646312513 has 8 divisors (see below), whose sum is σ = 167572880800. Its totient is φ = 83741976288.

The previous prime is 125646312497. The next prime is 125646312541. The reversal of 125646312513 is 315213646521.

It is a happy number.

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

It is not a de Polignac number, because 125646312513 - 2⁴ = 125646312497 is a prime.

It is a super-2 number, since 2×125646312513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125646312563) 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, 5544823 + ... + 5567436.

It is an arithmetic number, because the mean of its divisors is an integer number (20946610100).

Almost surely, 2^125646312513 is an apocalyptic number.

It is an amenable number.

125646312513 is a deficient number, since it is larger than the sum of its proper divisors (41926568287).

125646312513 is a wasteful number, since it uses less digits than its factorization.

125646312513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11116031.

The product of its digits is 129600, while the sum is 39.

The spelling of 125646312513 in words is "one hundred twenty-five billion, six hundred forty-six million, three hundred twelve thousand, five hundred thirteen".