25256225 has 12 divisors (see below), whose sum is σ = 32966640. Its totient is φ = 19141200.

The previous prime is 25256207. The next prime is 25256243. The reversal of 25256225 is 52265252.

It is an interprime number because it is at equal distance from previous prime (25256207) and next prime (25256243).

It is a de Polignac number, because none of the positive numbers 2^k-25256225 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26111 + ... + 27060.

It is an arithmetic number, because the mean of its divisors is an integer number (2747220).

Almost surely, 2^25256225 is an apocalyptic number.

25256225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25256225 is a deficient number, since it is larger than the sum of its proper divisors (7710415).

25256225 is a wasteful number, since it uses less digits than its factorization.

25256225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53200 (or 53195 counting only the distinct ones).

The product of its digits is 12000, while the sum is 29.

The square root of 25256225 is about 5025.5571830395. The cubic root of 25256225 is about 293.3973223292.

The spelling of 25256225 in words is "twenty-five million, two hundred fifty-six thousand, two hundred twenty-five".