125789031 has 20 divisors (see below), whose sum is σ = 188884872. Its totient is φ = 83423088.

The previous prime is 125789021. The next prime is 125789039. The reversal of 125789031 is 130987521.

It is not a de Polignac number, because 125789031 - 2⁷ = 125788903 is a prime.

It is a super-2 number, since 2×125789031² = 31645760639837922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125789039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12016 + ... + 19898.

Almost surely, 2^125789031 is an apocalyptic number.

125789031 is a deficient number, since it is larger than the sum of its proper divisors (63095841).

125789031 is an equidigital number, since it uses as much as digits as its factorization.

125789031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8092 (or 8083 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 125789031 is about 11215.5709172561. The cubic root of 125789031 is about 501.0498354815.

It can be divided in two parts, 12578 and 9031, that added together give a square (21609 = 147²).

The spelling of 125789031 in words is "one hundred twenty-five million, seven hundred eighty-nine thousand, thirty-one".