25242165 has 64 divisors (see below), whose sum is σ = 50937600. Its totient is φ = 11757312.

The previous prime is 25242163. The next prime is 25242169. The reversal of 25242165 is 56124252.

It is not a de Polignac number, because 25242165 - 2¹ = 25242163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25242163) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32967 + ... + 33723.

It is an arithmetic number, because the mean of its divisors is an integer number (795900).

Almost surely, 2^25242165 is an apocalyptic number.

It is an amenable number.

25242165 is an abundant number, since it is smaller than the sum of its proper divisors (25695435).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25242165 is a wasteful number, since it uses less digits than its factorization.

25242165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803 (or 797 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 25242165 is about 5024.1581384347. The cubic root of 25242165 is about 293.3428680039.

The spelling of 25242165 in words is "twenty-five million, two hundred forty-two thousand, one hundred sixty-five".