125656816 has 10 divisors (see below), whose sum is σ = 243460112. Its totient is φ = 62828400.

The previous prime is 125656801. The next prime is 125656819. The reversal of 125656816 is 618656521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125656819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3926760 + ... + 3926791.

Almost surely, 2^125656816 is an apocalyptic number.

125656816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125656816 is a deficient number, since it is larger than the sum of its proper divisors (117803296).

125656816 is an equidigital number, since it uses as much as digits as its factorization.

125656816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7853559 (or 7853553 counting only the distinct ones).

The product of its digits is 86400, while the sum is 40.

The square root of 125656816 is about 11209.6751067995. The cubic root of 125656816 is about 500.8742252363.

The spelling of 125656816 in words is "one hundred twenty-five million, six hundred fifty-six thousand, eight hundred sixteen".