125171690 has 32 divisors (see below), whose sum is σ = 262362240. Its totient is φ = 42105024.

The previous prime is 125171689. The next prime is 125171699. The reversal of 125171690 is 96171521.

It is a super-2 number, since 2×125171690² = 31335903954912200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125171699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13160 + ... + 20579.

It is an arithmetic number, because the mean of its divisors is an integer number (8198820).

Almost surely, 2^125171690 is an apocalyptic number.

125171690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125171690 is an abundant number, since it is smaller than the sum of its proper divisors (137190550).

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

125171690 is a wasteful number, since it uses less digits than its factorization.

125171690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33806.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 125171690 is about 11188.0154629854. The cubic root of 125171690 is about 500.2288152712.

The spelling of 125171690 in words is "one hundred twenty-five million, one hundred seventy-one thousand, six hundred ninety".