25105239 has 12 divisors (see below), whose sum is σ = 36317736. Its totient is φ = 16711632.

The previous prime is 25105219. The next prime is 25105261. The reversal of 25105239 is 93250152.

It is not a de Polignac number, because 25105239 - 2⁷ = 25105111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25105219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5757 + ... + 9129.

It is an arithmetic number, because the mean of its divisors is an integer number (3026478).

Almost surely, 2^25105239 is an apocalyptic number.

25105239 is a deficient number, since it is larger than the sum of its proper divisors (11212497).

25105239 is a wasteful number, since it uses less digits than its factorization.

25105239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206 (or 4203 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 25105239 is about 5010.5128480027. The cubic root of 25105239 is about 292.8114937148.

The spelling of 25105239 in words is "twenty-five million, one hundred five thousand, two hundred thirty-nine".