20630625 has 20 divisors (see below), whose sum is σ = 34376496. Its totient is φ = 11002000.

The previous prime is 20630611. The next prime is 20630641. The reversal of 20630625 is 52603602.

It is not a de Polignac number, because 20630625 - 2¹⁴ = 20614241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20630595 and 20630604.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3627 + ... + 7376.

Almost surely, 2^20630625 is an apocalyptic number.

20630625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20630625 is a deficient number, since it is larger than the sum of its proper divisors (13745871).

20630625 is an equidigital number, since it uses as much as digits as its factorization.

20630625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11026 (or 11011 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 20630625 is about 4542.0947810454. The cubic root of 20630625 is about 274.2652562944.

The spelling of 20630625 in words is "twenty million, six hundred thirty thousand, six hundred twenty-five".