25656255 has 12 divisors (see below), whose sum is σ = 44470920. Its totient is φ = 13683312.

The previous prime is 25656233. The next prime is 25656263. The reversal of 25656255 is 55265652.

25656255 is a `hidden beast` number, since 25 + 6 + 5 + 625 + 5 = 666.

It is not a de Polignac number, because 25656255 - 2⁹ = 25655743 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 285025 + ... + 285114.

It is an arithmetic number, because the mean of its divisors is an integer number (3705910).

Almost surely, 2^25656255 is an apocalyptic number.

25656255 is a deficient number, since it is larger than the sum of its proper divisors (18814665).

25656255 is a wasteful number, since it uses less digits than its factorization.

25656255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570150 (or 570147 counting only the distinct ones).

The product of its digits is 90000, while the sum is 36.

The square root of 25656255 is about 5065.2003909026. The cubic root of 25656255 is about 294.9382423627.

The spelling of 25656255 in words is "twenty-five million, six hundred fifty-six thousand, two hundred fifty-five".