125537616 has 30 divisors (see below), whose sum is σ = 351331370. Its totient is φ = 41845824.

The previous prime is 125537609. The next prime is 125537651. The reversal of 125537616 is 616735521.

125537616 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 37 + 616 = 666.

It can be written as a sum of positive squares in only one way, i.e., 124545600 + 992016 = 11160^2 + 996^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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, 435751 + ... + 436038.

Almost surely, 2^125537616 is an apocalyptic number.

125537616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125537616 is an abundant number, since it is smaller than the sum of its proper divisors (225793754).

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

125537616 is a wasteful number, since it uses less digits than its factorization.

125537616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871803 (or 871794 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 125537616 is about 11204.3570096637. The cubic root of 125537616 is about 500.7157961162.

The spelling of 125537616 in words is "one hundred twenty-five million, five hundred thirty-seven thousand, six hundred sixteen".