25541865 has 16 divisors (see below), whose sum is σ = 45408000. Its totient is φ = 13622256.

The previous prime is 25541851. The next prime is 25541881. The reversal of 25541865 is 56814552.

It is not a de Polignac number, because 25541865 - 2⁸ = 25541609 is a prime.

It is a Curzon 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, 94465 + ... + 94734.

It is an arithmetic number, because the mean of its divisors is an integer number (2838000).

Almost surely, 2^25541865 is an apocalyptic number.

It is an amenable number.

25541865 is a deficient number, since it is larger than the sum of its proper divisors (19866135).

25541865 is a wasteful number, since it uses less digits than its factorization.

25541865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189213 (or 189207 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 25541865 is about 5053.8960218825. The cubic root of 25541865 is about 294.4992558325.

The spelling of 25541865 in words is "twenty-five million, five hundred forty-one thousand, eight hundred sixty-five".