25632625 has 16 divisors (see below), whose sum is σ = 32677632. Its totient is φ = 20065200.

The previous prime is 25632587. The next prime is 25632631. The reversal of 25632625 is 52623652.

It is a de Polignac number, because none of the positive numbers 2^k-25632625 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3694 + ... + 8056.

It is an arithmetic number, because the mean of its divisors is an integer number (2042352).

Almost surely, 2^25632625 is an apocalyptic number.

25632625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25632625 is a deficient number, since it is larger than the sum of its proper divisors (7045007).

25632625 is an equidigital number, since it uses as much as digits as its factorization.

25632625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425 (or 4415 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

The square root of 25632625 is about 5062.8672706284. The cubic root of 25632625 is about 294.8476662515.

Adding to 25632625 its product of digits (21600), we get a square (25654225 = 5065²).

The spelling of 25632625 in words is "twenty-five million, six hundred thirty-two thousand, six hundred twenty-five".