125531670 has 64 divisors (see below), whose sum is σ = 345980160. Its totient is φ = 28828800.

The previous prime is 125531657. The next prime is 125531671. The reversal of 125531670 is 76135521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125531671) 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 31 ways as a sum of consecutive naturals, for example, 3741 + ... + 16280.

It is an arithmetic number, because the mean of its divisors is an integer number (5405940).

Almost surely, 2^125531670 is an apocalyptic number.

125531670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125531670 is an abundant number, since it is smaller than the sum of its proper divisors (220448490).

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

125531670 is a wasteful number, since it uses less digits than its factorization.

125531670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20061.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 125531670 is about 11204.0916633166. The cubic root of 125531670 is about 500.7078906420.

The spelling of 125531670 in words is "one hundred twenty-five million, five hundred thirty-one thousand, six hundred seventy".