20625888 has 24 divisors (see below), whose sum is σ = 54143208. Its totient is φ = 6875264.

The previous prime is 20625877. The next prime is 20625893. The reversal of 20625888 is 88852602.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 107331 + ... + 107522.

It is an arithmetic number, because the mean of its divisors is an integer number (2255967).

Almost surely, 2^20625888 is an apocalyptic number.

It is an amenable number.

20625888 is an abundant number, since it is smaller than the sum of its proper divisors (33517320).

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

20625888 is a wasteful number, since it uses less digits than its factorization.

20625888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214866 (or 214858 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 20625888 is about 4541.5732956763. The cubic root of 20625888 is about 274.2442633294.

The spelling of 20625888 in words is "twenty million, six hundred twenty-five thousand, eight hundred eighty-eight".