16397425 has 12 divisors (see below), whose sum is σ = 22181616. Its totient is φ = 11925200.

The previous prime is 16397411. The next prime is 16397467. The reversal of 16397425 is 52479361.

It is a de Polignac number, because none of the positive numbers 2^k-16397425 is a prime.

It is a Duffinian number.

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, 29539 + ... + 30088.

It is an arithmetic number, because the mean of its divisors is an integer number (1848468).

Almost surely, 2^16397425 is an apocalyptic number.

It is an amenable number.

16397425 is a deficient number, since it is larger than the sum of its proper divisors (5784191).

16397425 is a wasteful number, since it uses less digits than its factorization.

16397425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59648 (or 59643 counting only the distinct ones).

The product of its digits is 45360, while the sum is 37.

The square root of 16397425 is about 4049.3734083189. The cubic root of 16397425 is about 254.0535206622.

The spelling of 16397425 in words is "sixteen million, three hundred ninety-seven thousand, four hundred twenty-five".