20624625 has 96 divisors (see below), whose sum is σ = 44518656. Its totient is φ = 9331200.

The previous prime is 20624623. The next prime is 20624657. The reversal of 20624625 is 52642602.

It is not a de Polignac number, because 20624625 - 2¹ = 20624623 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20624623) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 212577 + ... + 212673.

It is an arithmetic number, because the mean of its divisors is an integer number (463736).

Almost surely, 2^20624625 is an apocalyptic number.

20624625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20624625 is an abundant number, since it is smaller than the sum of its proper divisors (23894031).

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

20624625 is an frugal number, since it uses more digits than its factorization.

20624625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 112 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20624625 is about 4541.4342448174. The cubic root of 20624625 is about 274.2386655490.

The spelling of 20624625 in words is "twenty million, six hundred twenty-four thousand, six hundred twenty-five".