25456625 has 8 divisors (see below), whose sum is σ = 31770024. Its totient is φ = 20365200.

The previous prime is 25456609. The next prime is 25456631. The reversal of 25456625 is 52665452.

It can be written as a sum of positive squares in 4 ways, for example, as 44944 + 25411681 = 212^2 + 5041^2 .

It is not a de Polignac number, because 25456625 - 2⁴ = 25456609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101702 + ... + 101951.

It is an arithmetic number, because the mean of its divisors is an integer number (3971253).

Almost surely, 2^25456625 is an apocalyptic number.

25456625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25456625 is a deficient number, since it is larger than the sum of its proper divisors (6313399).

25456625 is an equidigital number, since it uses as much as digits as its factorization.

25456625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203668 (or 203658 counting only the distinct ones).

The product of its digits is 72000, while the sum is 35.

The square root of 25456625 is about 5045.4558763307. The cubic root of 25456625 is about 294.1712832574.

The spelling of 25456625 in words is "twenty-five million, four hundred fifty-six thousand, six hundred twenty-five".