125640390010 has 8 divisors (see below), whose sum is σ = 226152702036. Its totient is φ = 50256156000.

The previous prime is 125640389993. The next prime is 125640390023. The reversal of 125640390010 is 10093046521.

It can be written as a sum of positive squares in 2 ways, for example, as 104296056601 + 21344333409 = 322949^2 + 146097^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6282019491 + ... + 6282019510.

Almost surely, 2^125640390010 is an apocalyptic number.

125640390010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125640390010 is a deficient number, since it is larger than the sum of its proper divisors (100512312026).

125640390010 is a wasteful number, since it uses less digits than its factorization.

125640390010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12564039008.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 125640390010 in words is "one hundred twenty-five billion, six hundred forty million, three hundred ninety thousand, ten".