125234432521 has 16 divisors (see below), whose sum is σ = 142601518080. Its totient is φ = 108867298320.

The previous prime is 125234432507. The next prime is 125234432527.

125234432521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 125234432521 - 2¹⁷ = 125234301449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125234432527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 804670 + ... + 947608.

It is an arithmetic number, because the mean of its divisors is an integer number (8912594880).

Almost surely, 2^125234432521 is an apocalyptic number.

125234432521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125234432521 is a deficient number, since it is larger than the sum of its proper divisors (17367085559).

125234432521 is a wasteful number, since it uses less digits than its factorization.

125234432521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146436.

The product of its digits is 57600, while the sum is 34.

It can be divided in two parts, 125234 and 432521, that added together give a palindrome (557755).

The spelling of 125234432521 in words is "one hundred twenty-five billion, two hundred thirty-four million, four hundred thirty-two thousand, five hundred twenty-one".