25564315 has 16 divisors (see below), whose sum is σ = 35386560. Its totient is φ = 17366400.

The previous prime is 25564309. The next prime is 25564349. The reversal of 25564315 is 51346552.

It is not a de Polignac number, because 25564315 - 2⁹ = 25563803 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465 + ... + 7165.

It is an arithmetic number, because the mean of its divisors is an integer number (2211660).

Almost surely, 2^25564315 is an apocalyptic number.

25564315 is a deficient number, since it is larger than the sum of its proper divisors (9822245).

25564315 is a wasteful number, since it uses less digits than its factorization.

25564315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6822.

The product of its digits is 18000, while the sum is 31.

The square root of 25564315 is about 5056.1165928012. The cubic root of 25564315 is about 294.5855138535.

The spelling of 25564315 in words is "twenty-five million, five hundred sixty-four thousand, three hundred fifteen".