25415564 has 12 divisors (see below), whose sum is σ = 45040800. Its totient is φ = 12546768.

The previous prime is 25415549. The next prime is 25415569. The reversal of 25415564 is 46551452.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25415564.

It is not an unprimeable number, because it can be changed into a prime (25415569) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 39899 + ... + 40530.

It is an arithmetic number, because the mean of its divisors is an integer number (3753400).

Almost surely, 2^25415564 is an apocalyptic number.

It is an amenable number.

25415564 is a deficient number, since it is larger than the sum of its proper divisors (19625236).

25415564 is a wasteful number, since it uses less digits than its factorization.

25415564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80512 (or 80510 counting only the distinct ones).

The product of its digits is 24000, while the sum is 32.

The square root of 25415564 is about 5041.3851271253. The cubic root of 25415564 is about 294.0130341145.

The spelling of 25415564 in words is "twenty-five million, four hundred fifteen thousand, five hundred sixty-four".