125305531026 has 32 divisors (see below), whose sum is σ = 270863210688. Its totient is φ = 38416351680.

The previous prime is 125305530937. The next prime is 125305531093. The reversal of 125305531026 is 620135503521.

It is a happy number.

It is a super-2 number, since 2×125305531026² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2878180 + ... + 2921391.

It is an arithmetic number, because the mean of its divisors is an integer number (8464475334).

Almost surely, 2^125305531026 is an apocalyptic number.

125305531026 is an abundant number, since it is smaller than the sum of its proper divisors (145557679662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125305531026 is a wasteful number, since it uses less digits than its factorization.

125305531026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5799866.

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 125305531026 in words is "one hundred twenty-five billion, three hundred five million, five hundred thirty-one thousand, twenty-six".