25436564 has 24 divisors (see below), whose sum is σ = 46673088. Its totient is φ = 12116160.

The previous prime is 25436561. The next prime is 25436569. The reversal of 25436564 is 46563452.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25436561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5249 + ... + 8855.

It is an arithmetic number, because the mean of its divisors is an integer number (1944712).

Almost surely, 2^25436564 is an apocalyptic number.

It is an amenable number.

25436564 is a deficient number, since it is larger than the sum of its proper divisors (21236524).

25436564 is a wasteful number, since it uses less digits than its factorization.

25436564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695 (or 3693 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The square root of 25436564 is about 5043.4674580094. The cubic root of 25436564 is about 294.0939894163.

The spelling of 25436564 in words is "twenty-five million, four hundred thirty-six thousand, five hundred sixty-four".