25512625 has 8 divisors (see below), whose sum is σ = 31839912. Its totient is φ = 20410000.

The previous prime is 25512593. The next prime is 25512637. The reversal of 25512625 is 52621552.

It can be written as a sum of positive squares in 4 ways, for example, as 121104 + 25391521 = 348^2 + 5039^2 .

It is not a de Polignac number, because 25512625 - 2⁵ = 25512593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25512593 and 25512602.

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 7 ways as a sum of consecutive naturals, for example, 101926 + ... + 102175.

It is an arithmetic number, because the mean of its divisors is an integer number (3979989).

Almost surely, 2^25512625 is an apocalyptic number.

25512625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25512625 is a deficient number, since it is larger than the sum of its proper divisors (6327287).

25512625 is an equidigital number, since it uses as much as digits as its factorization.

25512625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204116 (or 204106 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 25512625 is about 5051.0023757666. The cubic root of 25512625 is about 294.3868332626.

It can be divided in two parts, 255 and 12625, that added together give a triangular number (12880 = T₁₆₀).

The spelling of 25512625 in words is "twenty-five million, five hundred twelve thousand, six hundred twenty-five".