25426564 has 6 divisors (see below), whose sum is σ = 44496494. Its totient is φ = 12713280.

The previous prime is 25426561. The next prime is 25426573. The reversal of 25426564 is 46562452.

It can be written as a sum of positive squares in only one way, i.e., 25401600 + 24964 = 5040^2 + 158^2 .

It is not an unprimeable number, because it can be changed into a prime (25426561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3178317 + ... + 3178324.

Almost surely, 2^25426564 is an apocalyptic number.

It is an amenable number.

25426564 is a deficient number, since it is larger than the sum of its proper divisors (19069930).

25426564 is a wasteful number, since it uses less digits than its factorization.

25426564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6356645 (or 6356643 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 25426564 is about 5042.4759791198. The cubic root of 25426564 is about 294.0554448318.

The spelling of 25426564 in words is "twenty-five million, four hundred twenty-six thousand, five hundred sixty-four".