25613487 has 12 divisors (see below), whose sum is σ = 37290240. Its totient is φ = 16940448.

The previous prime is 25613477. The next prime is 25613503. The reversal of 25613487 is 78431652.

It is not a de Polignac number, because 25613487 - 2¹⁰ = 25612463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25613447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10062 + ... + 12347.

It is an arithmetic number, because the mean of its divisors is an integer number (3107520).

Almost surely, 2^25613487 is an apocalyptic number.

25613487 is a deficient number, since it is larger than the sum of its proper divisors (11676753).

25613487 is a wasteful number, since it uses less digits than its factorization.

25613487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22542 (or 22539 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 25613487 is about 5060.9768819863. The cubic root of 25613487 is about 294.7742676098.

The spelling of 25613487 in words is "twenty-five million, six hundred thirteen thousand, four hundred eighty-seven".