125161988 has 24 divisors (see below), whose sum is σ = 250572672. Its totient is φ = 53587584.

The previous prime is 125161979. The next prime is 125161997. The reversal of 125161988 is 889161521.

It is an interprime number because it is at equal distance from previous prime (125161979) and next prime (125161997).

It is a super-2 number, since 2×125161988² = 31331046480224288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41756 + ... + 44652.

It is an arithmetic number, because the mean of its divisors is an integer number (10440528).

Almost surely, 2^125161988 is an apocalyptic number.

It is an amenable number.

125161988 is an abundant number, since it is smaller than the sum of its proper divisors (125410684).

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

125161988 is a wasteful number, since it uses less digits than its factorization.

125161988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4451 (or 4449 counting only the distinct ones).

The product of its digits is 34560, while the sum is 41.

The square root of 125161988 is about 11187.5818656223. The cubic root of 125161988 is about 500.2158907689.

The spelling of 125161988 in words is "one hundred twenty-five million, one hundred sixty-one thousand, nine hundred eighty-eight".