20925416 has 32 divisors (see below), whose sum is σ = 40582080. Its totient is φ = 10108800.

The previous prime is 20925389. The next prime is 20925433. The reversal of 20925416 is 61452902.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42725 + ... + 43211.

It is an arithmetic number, because the mean of its divisors is an integer number (1268190).

Almost surely, 2^20925416 is an apocalyptic number.

It is an amenable number.

20925416 is a deficient number, since it is larger than the sum of its proper divisors (19656664).

20925416 is a wasteful number, since it uses less digits than its factorization.

20925416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 661 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 20925416 is about 4574.4306749584. The cubic root of 20925416 is about 275.5654086063.

The spelling of 20925416 in words is "twenty million, nine hundred twenty-five thousand, four hundred sixteen".