25042656 has 24 divisors (see below), whose sum is σ = 65737224. Its totient is φ = 8347520.

The previous prime is 25042651. The next prime is 25042663. The reversal of 25042656 is 65624052.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25042651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130335 + ... + 130526.

It is an arithmetic number, because the mean of its divisors is an integer number (2739051).

Almost surely, 2^25042656 is an apocalyptic number.

It is an amenable number.

25042656 is an abundant number, since it is smaller than the sum of its proper divisors (40694568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25042656 is a wasteful number, since it uses less digits than its factorization.

25042656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260874 (or 260866 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 25042656 is about 5004.2637820163. The cubic root of 25042656 is about 292.5679818610.

The spelling of 25042656 in words is "twenty-five million, forty-two thousand, six hundred fifty-six".