125215938 has 12 divisors (see below), whose sum is σ = 271301238. Its totient is φ = 41738640.

The previous prime is 125215919. The next prime is 125215949. The reversal of 125215938 is 839512521.

125215938 is a `hidden beast` number, since 12 + 52 + 1 + 593 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 109558089 + 15657849 = 10467^2 + 3957^2 .

It is a super-2 number, since 2×125215938² = 31358062258439688, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3478203 + ... + 3478238.

Almost surely, 2^125215938 is an apocalyptic number.

125215938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

125215938 is an abundant number, since it is smaller than the sum of its proper divisors (146085300).

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

125215938 is a wasteful number, since it uses less digits than its factorization.

125215938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6956449 (or 6956446 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 125215938 is about 11189.9927613918. The cubic root of 125215938 is about 500.2877516995.

The spelling of 125215938 in words is "one hundred twenty-five million, two hundred fifteen thousand, nine hundred thirty-eight".