25564330 has 32 divisors (see below), whose sum is σ = 50440320. Its totient is φ = 9251520.

The previous prime is 25564309. The next prime is 25564349. The reversal of 25564330 is 3346552.

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, 30051 + ... + 30889.

It is an arithmetic number, because the mean of its divisors is an integer number (1576260).

Almost surely, 2^25564330 is an apocalyptic number.

25564330 is a deficient number, since it is larger than the sum of its proper divisors (24875990).

25564330 is a wasteful number, since it uses less digits than its factorization.

25564330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 25564330 is about 5056.1180761529. The cubic root of 25564330 is about 294.5855714700.

It can be divided in two parts, 2556 and 4330, that added together give a palindrome (6886).

The spelling of 25564330 in words is "twenty-five million, five hundred sixty-four thousand, three hundred thirty".