25522564 has 12 divisors (see below), whose sum is σ = 45703504. Its totient is φ = 12464424.

The previous prime is 25522561. The next prime is 25522577. The reversal of 25522564 is 46522552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25522561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74022 + ... + 74365.

Almost surely, 2^25522564 is an apocalyptic number.

It is an amenable number.

25522564 is a deficient number, since it is larger than the sum of its proper divisors (20180940).

25522564 is a wasteful number, since it uses less digits than its factorization.

25522564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148434 (or 148432 counting only the distinct ones).

The product of its digits is 24000, while the sum is 31.

The square root of 25522564 is about 5051.9861440823. The cubic root of 25522564 is about 294.4250565719.

The spelling of 25522564 in words is "twenty-five million, five hundred twenty-two thousand, five hundred sixty-four".