16425657 has 24 divisors (see below), whose sum is σ = 25119744. Its totient is φ = 10321344.

The previous prime is 16425623. The next prime is 16425667. The reversal of 16425657 is 75652461.

It is a happy number.

16425657 is a `hidden beast` number, since 1 + 642 + 5 + 6 + 5 + 7 = 666.

It is not a de Polignac number, because 16425657 - 2⁸ = 16425401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16425667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14568 + ... + 15654.

It is an arithmetic number, because the mean of its divisors is an integer number (1046656).

Almost surely, 2^16425657 is an apocalyptic number.

It is an amenable number.

16425657 is a deficient number, since it is larger than the sum of its proper divisors (8694087).

16425657 is a wasteful number, since it uses less digits than its factorization.

16425657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189 (or 1186 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 16425657 is about 4052.8578805579. The cubic root of 16425657 is about 254.1992412369.

It can be divided in two parts, 16425 and 657, that multiplied together give a square (10791225 = 3285²).

The spelling of 16425657 in words is "sixteen million, four hundred twenty-five thousand, six hundred fifty-seven".