25565135 has 8 divisors (see below), whose sum is σ = 30713280. Its totient is φ = 20428704.

The previous prime is 25565101. The next prime is 25565143. The reversal of 25565135 is 53156552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25565135 - 2⁸ = 25564879 is a prime.

It is a super-2 number, since 2×25565135² = 1307152255136450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2954 + ... + 7736.

It is an arithmetic number, because the mean of its divisors is an integer number (3839160).

Almost surely, 2^25565135 is an apocalyptic number.

25565135 is a deficient number, since it is larger than the sum of its proper divisors (5148145).

25565135 is a wasteful number, since it uses less digits than its factorization.

25565135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857.

The product of its digits is 22500, while the sum is 32.

The square root of 25565135 is about 5056.1976820532. The cubic root of 25565135 is about 294.5886635244.

The spelling of 25565135 in words is "twenty-five million, five hundred sixty-five thousand, one hundred thirty-five".