25655137 has 4 divisors (see below), whose sum is σ = 25904320. Its totient is φ = 25405956.

The previous prime is 25655117. The next prime is 25655167. The reversal of 25655137 is 73155652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25655137 - 2¹⁵ = 25622369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25655107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124437 + ... + 124642.

It is an arithmetic number, because the mean of its divisors is an integer number (6476080).

Almost surely, 2^25655137 is an apocalyptic number.

It is an amenable number.

25655137 is a deficient number, since it is larger than the sum of its proper divisors (249183).

25655137 is a wasteful number, since it uses less digits than its factorization.

25655137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249182.

The product of its digits is 31500, while the sum is 34.

The square root of 25655137 is about 5065.0900288149. The cubic root of 25655137 is about 294.9339582126.

The spelling of 25655137 in words is "twenty-five million, six hundred fifty-five thousand, one hundred thirty-seven".