125939631 has 8 divisors (see below), whose sum is σ = 168255360. Its totient is φ = 83791832.

The previous prime is 125939629. The next prime is 125939633. The reversal of 125939631 is 136939521.

It is an interprime number because it is at equal distance from previous prime (125939629) and next prime (125939633).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125939631 - 2¹ = 125939629 is a prime.

It is a super-2 number, since 2×125939631² = 31721581312832322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125939631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125939633) 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 7 ways as a sum of consecutive naturals, for example, 40221 + ... + 43238.

It is an arithmetic number, because the mean of its divisors is an integer number (21031920).

Almost surely, 2^125939631 is an apocalyptic number.

125939631 is a deficient number, since it is larger than the sum of its proper divisors (42315729).

125939631 is an equidigital number, since it uses as much as digits as its factorization.

125939631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83965.

The product of its digits is 43740, while the sum is 39.

The square root of 125939631 is about 11222.2827891655. The cubic root of 125939631 is about 501.2497151550.

The spelling of 125939631 in words is "one hundred twenty-five million, nine hundred thirty-nine thousand, six hundred thirty-one".