25304865 has 16 divisors (see below), whose sum is σ = 42619200. Its totient is φ = 12785472.

The previous prime is 25304863. The next prime is 25304869. The reversal of 25304865 is 56840352.

It is not a de Polignac number, because 25304865 - 2¹ = 25304863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25304861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44110 + ... + 44679.

It is an arithmetic number, because the mean of its divisors is an integer number (2663700).

Almost surely, 2^25304865 is an apocalyptic number.

It is an amenable number.

25304865 is a deficient number, since it is larger than the sum of its proper divisors (17314335).

25304865 is a wasteful number, since it uses less digits than its factorization.

25304865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88816.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 25304865 is about 5030.3941197485. The cubic root of 25304865 is about 293.5855491171.

The spelling of 25304865 in words is "twenty-five million, three hundred four thousand, eight hundred sixty-five".