125431770 has 16 divisors (see below), whose sum is σ = 301036320. Its totient is φ = 33448464.

The previous prime is 125431759. The next prime is 125431771. The reversal of 125431770 is 77134521.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4181059 = 125431770 / (1 + 2 + 5 + 4 + 3 + 1 + 7 + 7 + 0).

It is not an unprimeable number, because it can be changed into a prime (125431771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2090500 + ... + 2090559.

It is an arithmetic number, because the mean of its divisors is an integer number (18814770).

Almost surely, 2^125431770 is an apocalyptic number.

125431770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125431770 is an abundant number, since it is smaller than the sum of its proper divisors (175604550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125431770 is a wasteful number, since it uses less digits than its factorization.

125431770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181069.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 125431770 is about 11199.6325832591. The cubic root of 125431770 is about 500.5750317568.

The spelling of 125431770 in words is "one hundred twenty-five million, four hundred thirty-one thousand, seven hundred seventy".