25165238 has 16 divisors (see below), whose sum is σ = 43240704. Its totient is φ = 10760040.

The previous prime is 25165237. The next prime is 25165241. The reversal of 25165238 is 83256152.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25165237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4973 + ... + 8663.

It is an arithmetic number, because the mean of its divisors is an integer number (2702544).

Almost surely, 2^25165238 is an apocalyptic number.

25165238 is a deficient number, since it is larger than the sum of its proper divisors (18075466).

25165238 is a wasteful number, since it uses less digits than its factorization.

25165238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4187.

The product of its digits is 14400, while the sum is 32.

The square root of 25165238 is about 5016.4965862642. The cubic root of 25165238 is about 293.0445714905.

The spelling of 25165238 in words is "twenty-five million, one hundred sixty-five thousand, two hundred thirty-eight".