20425625 has 20 divisors (see below), whose sum is σ = 27853584. Its totient is φ = 14850000.

The previous prime is 20425607. The next prime is 20425637. The reversal of 20425625 is 52652402.

It is not a de Polignac number, because 20425625 - 2¹⁶ = 20360089 is a prime.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20425594 and 20425603.

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, 5390 + ... + 8360.

Almost surely, 2^20425625 is an apocalyptic number.

20425625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20425625 is a deficient number, since it is larger than the sum of its proper divisors (7427959).

20425625 is an equidigital number, since it uses as much as digits as its factorization.

20425625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002 (or 2987 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20425625 is about 4519.4717611686. The cubic root of 20425625 is about 273.3538015937.

It can be divided in two parts, 2042 and 5625, that added together give a palindrome (7667).

The spelling of 20425625 in words is "twenty million, four hundred twenty-five thousand, six hundred twenty-five".