625878025 has 6 divisors (see below), whose sum is σ = 776088782. Its totient is φ = 500702400.

The previous prime is 625877981. The next prime is 625878041. The reversal of 625878025 is 520878526.

It can be written as a sum of positive squares in 3 ways, for example, as 3674889 + 622203136 = 1917^2 + 24944^2 .

It is not a de Polignac number, because 625878025 - 2¹⁵ = 625845257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12517536 + ... + 12517585.

Almost surely, 2^625878025 is an apocalyptic number.

It is an amenable number.

625878025 is a deficient number, since it is larger than the sum of its proper divisors (150210757).

625878025 is a wasteful number, since it uses less digits than its factorization.

625878025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25035131 (or 25035126 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 625878025 is about 25017.5543369051. The cubic root of 625878025 is about 855.3881597657.

The spelling of 625878025 in words is "six hundred twenty-five million, eight hundred seventy-eight thousand, twenty-five".