25464565 has 24 divisors (see below), whose sum is σ = 37100160. Its totient is φ = 16698528.

The previous prime is 25464559. The next prime is 25464583. The reversal of 25464565 is 56546452.

It is not a de Polignac number, because 25464565 - 2¹⁵ = 25431797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3376 + ... + 7894.

It is an arithmetic number, because the mean of its divisors is an integer number (1545840).

Almost surely, 2^25464565 is an apocalyptic number.

It is an amenable number.

25464565 is a deficient number, since it is larger than the sum of its proper divisors (11635595).

25464565 is a wasteful number, since it uses less digits than its factorization.

25464565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561 (or 4554 counting only the distinct ones).

The product of its digits is 144000, while the sum is 37.

The square root of 25464565 is about 5046.2426616246. The cubic root of 25464565 is about 294.2018643889.

The spelling of 25464565 in words is "twenty-five million, four hundred sixty-four thousand, five hundred sixty-five".