25952564 has 54 divisors (see below), whose sum is σ = 52871490. Its totient is φ = 11124960.

The previous prime is 25952561. The next prime is 25952569. The reversal of 25952564 is 46525952.

It can be written as a sum of positive squares in only one way, i.e., 22372900 + 3579664 = 4730^2 + 1892^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25952561) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 603527 + ... + 603569.

Almost surely, 2^25952564 is an apocalyptic number.

It is an amenable number.

25952564 is an abundant number, since it is smaller than the sum of its proper divisors (26918926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25952564 is a wasteful number, since it uses less digits than its factorization.

25952564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 85 counting only the distinct ones).

The product of its digits is 108000, while the sum is 38.

The square root of 25952564 is about 5094.3659075492. The cubic root of 25952564 is about 296.0693318235.

The spelling of 25952564 in words is "twenty-five million, nine hundred fifty-two thousand, five hundred sixty-four".