25664855 has 16 divisors (see below), whose sum is σ = 32028480. Its totient is φ = 19719168.

The previous prime is 25664843. The next prime is 25664887. The reversal of 25664855 is 55846652.

25664855 = T₁₀ + T₁₁ + ... + T₅₃₅.

It is a cyclic number.

It is not a de Polignac number, because 25664855 - 2⁸ = 25664599 is a prime.

It is a congruent 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, 37799 + ... + 38471.

It is an arithmetic number, because the mean of its divisors is an integer number (2001780).

Almost surely, 2^25664855 is an apocalyptic number.

25664855 is a deficient number, since it is larger than the sum of its proper divisors (6363625).

25664855 is a wasteful number, since it uses less digits than its factorization.

25664855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970.

The product of its digits is 288000, while the sum is 41.

The square root of 25664855 is about 5066.0492496619. The cubic root of 25664855 is about 294.9711932036.

The spelling of 25664855 in words is "twenty-five million, six hundred sixty-four thousand, eight hundred fifty-five".