25256655 has 24 divisors (see below), whose sum is σ = 44436912. Its totient is φ = 13267584.

The previous prime is 25256653. The next prime is 25256659. The reversal of 25256655 is 55665252.

It is not a de Polignac number, because 25256655 - 2¹ = 25256653 is a prime.

It is a super-3 number, since 3×25256655³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25256653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1174 + ... + 7203.

It is an arithmetic number, because the mean of its divisors is an integer number (1851538).

Almost surely, 2^25256655 is an apocalyptic number.

25256655 is a deficient number, since it is larger than the sum of its proper divisors (19180257).

25256655 is a wasteful number, since it uses less digits than its factorization.

25256655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8455 (or 8452 counting only the distinct ones).

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

The square root of 25256655 is about 5025.5999641834. The cubic root of 25256655 is about 293.3989873990.

It can be divided in two parts, 2525 and 6655, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 25256655 in words is "twenty-five million, two hundred fifty-six thousand, six hundred fifty-five".