125531634 has 16 divisors (see below), whose sum is σ = 251249760. Its totient is φ = 41812800.

The previous prime is 125531579. The next prime is 125531641. The reversal of 125531634 is 436135521.

It is a super-2 number, since 2×125531634² = 31516382269419912, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909 + ... + 15959.

It is an arithmetic number, because the mean of its divisors is an integer number (15703110).

Almost surely, 2^125531634 is an apocalyptic number.

125531634 is an abundant number, since it is smaller than the sum of its proper divisors (125718126).

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

125531634 is a wasteful number, since it uses less digits than its factorization.

125531634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15545.

The product of its digits is 10800, while the sum is 30.

The square root of 125531634 is about 11204.0900567605. The cubic root of 125531634 is about 500.7078427777.

The spelling of 125531634 in words is "one hundred twenty-five million, five hundred thirty-one thousand, six hundred thirty-four".