125534631 has 4 divisors (see below), whose sum is σ = 167379512. Its totient is φ = 83689752.

The previous prime is 125534627. The next prime is 125534663. The reversal of 125534631 is 136435521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136435521 = 3 ⋅45478507.

It is not a de Polignac number, because 125534631 - 2² = 125534627 is a prime.

It is a super-2 number, since 2×125534631² = 31517887160612322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125534611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20922436 + ... + 20922441.

It is an arithmetic number, because the mean of its divisors is an integer number (41844878).

Almost surely, 2^125534631 is an apocalyptic number.

125534631 is a deficient number, since it is larger than the sum of its proper divisors (41844881).

125534631 is an equidigital number, since it uses as much as digits as its factorization.

125534631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41844880.

The product of its digits is 10800, while the sum is 30.

The square root of 125534631 is about 11204.2238017633. The cubic root of 125534631 is about 500.7118274558.

The spelling of 125534631 in words is "one hundred twenty-five million, five hundred thirty-four thousand, six hundred thirty-one".