16601425 has 12 divisors (see below), whose sum is σ = 20646000. Its totient is φ = 13242320.

The previous prime is 16601413. The next prime is 16601447. The reversal of 16601425 is 52410661.

It is a de Polignac number, because none of the positive numbers 2^k-16601425 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 16601425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10326 + ... + 11824.

It is an arithmetic number, because the mean of its divisors is an integer number (1720500).

Almost surely, 2^16601425 is an apocalyptic number.

It is an amenable number.

16601425 is a deficient number, since it is larger than the sum of its proper divisors (4044575).

16601425 is a wasteful number, since it uses less digits than its factorization.

16601425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1947 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 16601425 is about 4074.4846299870. The cubic root of 16601425 is about 255.1027395823.

The spelling of 16601425 in words is "sixteen million, six hundred one thousand, four hundred twenty-five".