390625025 has 24 divisors (see below), whose sum is σ = 555839424. Its totient is φ = 266760000.

The previous prime is 390625013. The next prime is 390625033. The reversal of 390625025 is 520526093.

It is not a de Polignac number, because 390625025 - 2²⁰ = 389576449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390624982 and 390625000.

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 23 ways as a sum of consecutive naturals, for example, 39479 + ... + 48371.

It is an arithmetic number, because the mean of its divisors is an integer number (23159976).

Almost surely, 2^390625025 is an apocalyptic number.

390625025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

390625025 is a deficient number, since it is larger than the sum of its proper divisors (165214399).

390625025 is a wasteful number, since it uses less digits than its factorization.

390625025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9161 (or 9156 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 390625025 is about 19764.2360085079. The cubic root of 390625025 is about 731.0044501480.

The spelling of 390625025 in words is "three hundred ninety million, six hundred twenty-five thousand, twenty-five".