25613564 has 24 divisors (see below), whose sum is σ = 46975488. Its totient is φ = 12204720.

The previous prime is 25613531. The next prime is 25613569. The reversal of 25613564 is 46531652.

It is a self number, because there is not a number n which added to its sum of digits gives 25613564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25613569) 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, 6767 + ... + 9849.

It is an arithmetic number, because the mean of its divisors is an integer number (1957312).

Almost surely, 2^25613564 is an apocalyptic number.

It is an amenable number.

25613564 is a deficient number, since it is larger than the sum of its proper divisors (21361924).

25613564 is a wasteful number, since it uses less digits than its factorization.

25613564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3185 (or 3183 counting only the distinct ones).

The product of its digits is 21600, while the sum is 32.

The square root of 25613564 is about 5060.9844892076. The cubic root of 25613564 is about 294.7745629958.

The spelling of 25613564 in words is "twenty-five million, six hundred thirteen thousand, five hundred sixty-four".