125637231 has 4 divisors (see below), whose sum is σ = 167516312. Its totient is φ = 83758152.

The previous prime is 125637229. The next prime is 125637241. The reversal of 125637231 is 132736521.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 125637231 - 2¹ = 125637229 is a prime.

It is a super-2 number, since 2×125637231² = 31569427626694722, 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 (125637221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20939536 + ... + 20939541.

It is an arithmetic number, because the mean of its divisors is an integer number (41879078).

Almost surely, 2^125637231 is an apocalyptic number.

125637231 is a deficient number, since it is larger than the sum of its proper divisors (41879081).

125637231 is an equidigital number, since it uses as much as digits as its factorization.

125637231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41879080.

The product of its digits is 7560, while the sum is 30.

The square root of 125637231 is about 11208.8014970379. The cubic root of 125637231 is about 500.8482016277.

The spelling of 125637231 in words is "one hundred twenty-five million, six hundred thirty-seven thousand, two hundred thirty-one".