25233109 has 4 divisors (see below), whose sum is σ = 27527040. Its totient is φ = 22939180.

The previous prime is 25233067. The next prime is 25233113. The reversal of 25233109 is 90133252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-25233109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25233209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146949 + ... + 1146970.

It is an arithmetic number, because the mean of its divisors is an integer number (6881760).

Almost surely, 2^25233109 is an apocalyptic number.

It is an amenable number.

25233109 is a deficient number, since it is larger than the sum of its proper divisors (2293931).

25233109 is a wasteful number, since it uses less digits than its factorization.

25233109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293930.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 25233109 is about 5023.2568120692. The cubic root of 25233109 is about 293.3077834438.

The spelling of 25233109 in words is "twenty-five million, two hundred thirty-three thousand, one hundred nine".