125521354411431 has 32 divisors (see below), whose sum is σ = 185368695644160. Its totient is φ = 74912693906400.

The previous prime is 125521354411399. The next prime is 125521354411441. The reversal of 125521354411431 is 134114453125521.

It is not a de Polignac number, because 125521354411431 - 2⁵ = 125521354411399 is a prime.

It is a super-2 number, since 2×125521354411431² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125521354411441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29960875 + ... + 33892428.

It is an arithmetic number, because the mean of its divisors is an integer number (5792771738880).

Almost surely, 2^{125521354411431} is an apocalyptic number.

125521354411431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

125521354411431 is a deficient number, since it is larger than the sum of its proper divisors (59847341232729).

125521354411431 is a wasteful number, since it uses less digits than its factorization.

125521354411431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63854227.

The product of its digits is 288000, while the sum is 42.

The spelling of 125521354411431 in words is "one hundred twenty-five trillion, five hundred twenty-one billion, three hundred fifty-four million, four hundred eleven thousand, four hundred thirty-one".