163125657 has 12 divisors (see below), whose sum is σ = 244353200. Its totient is φ = 108750276.

The previous prime is 163125643. The next prime is 163125661. The reversal of 163125657 is 756521361.

163125657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

163125657 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 163125657 - 2¹² = 163121561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163125607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335407 + ... + 335892.

Almost surely, 2^163125657 is an apocalyptic number.

It is an amenable number.

163125657 is a deficient number, since it is larger than the sum of its proper divisors (81227543).

163125657 is an frugal number, since it uses more digits than its factorization.

163125657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671314 (or 671302 counting only the distinct ones).

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

The square root of 163125657 is about 12772.0654946645. The cubic root of 163125657 is about 546.3958908779.

The spelling of 163125657 in words is "one hundred sixty-three million, one hundred twenty-five thousand, six hundred fifty-seven".