15425664 has 96 divisors (see below), whose sum is σ = 43839600. Its totient is φ = 4804608.

The previous prime is 15425653. The next prime is 15425671. The reversal of 15425664 is 46652451.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×15425664² = 475902219681792, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110907 + ... + 111045.

Almost surely, 2^15425664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15425664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21919800).

15425664 is an abundant number, since it is smaller than the sum of its proper divisors (28413936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15425664 is a wasteful number, since it uses less digits than its factorization.

15425664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 161 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 15425664 is about 3927.5519092687. The cubic root of 15425664 is about 248.9323214075.

The spelling of 15425664 in words is "fifteen million, four hundred twenty-five thousand, six hundred sixty-four".