25165542 has 48 divisors (see below), whose sum is σ = 55878912. Its totient is φ = 7539840.

The previous prime is 25165531. The next prime is 25165549. The reversal of 25165542 is 24556152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25165549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39567 + ... + 40197.

It is an arithmetic number, because the mean of its divisors is an integer number (1164144).

Almost surely, 2^25165542 is an apocalyptic number.

25165542 is an abundant number, since it is smaller than the sum of its proper divisors (30713370).

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

25165542 is a wasteful number, since it uses less digits than its factorization.

25165542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 676 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 25165542 is about 5016.5268862032. The cubic root of 25165542 is about 293.0457514938.

The spelling of 25165542 in words is "twenty-five million, one hundred sixty-five thousand, five hundred forty-two".