25323909 has 16 divisors (see below), whose sum is σ = 36456000. Its totient is φ = 15543936.

The previous prime is 25323901. The next prime is 25323917. The reversal of 25323909 is 90932352.

It is an interprime number because it is at equal distance from previous prime (25323901) and next prime (25323917).

It is not a de Polignac number, because 25323909 - 2³ = 25323901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25323909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25323901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23617 + ... + 24665.

It is an arithmetic number, because the mean of its divisors is an integer number (2278500).

Almost surely, 2^25323909 is an apocalyptic number.

It is an amenable number.

25323909 is a deficient number, since it is larger than the sum of its proper divisors (11132091).

25323909 is a wasteful number, since it uses less digits than its factorization.

25323909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 25323909 is about 5032.2866571768. The cubic root of 25323909 is about 293.6591797702.

It can be divided in two parts, 2532 and 3909, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 25323909 in words is "twenty-five million, three hundred twenty-three thousand, nine hundred nine".