20625004 has 12 divisors (see below), whose sum is σ = 36551200. Its totient is φ = 10181808.

The previous prime is 20624987. The next prime is 20625019. The reversal of 20625004 is 40052602.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32319 + ... + 32950.

Almost surely, 2^20625004 is an apocalyptic number.

It is an amenable number.

20625004 is a deficient number, since it is larger than the sum of its proper divisors (15926196).

20625004 is a wasteful number, since it uses less digits than its factorization.

20625004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65352 (or 65350 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20625004 is about 4541.4759715317. The cubic root of 20625004 is about 274.2403453503.

Adding to 20625004 its reverse (40052602), we get a palindrome (60677606).

The spelling of 20625004 in words is "twenty million, six hundred twenty-five thousand, four".