25623959 has 4 divisors (see below), whose sum is σ = 25635816. Its totient is φ = 25612104.

The previous prime is 25623953. The next prime is 25623973. The reversal of 25623959 is 95932652.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 25623959 - 2¹² = 25619863 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 (25623953) 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, 1664 + ... + 7349.

It is an arithmetic number, because the mean of its divisors is an integer number (6408954).

Almost surely, 2^25623959 is an apocalyptic number.

25623959 is a deficient number, since it is larger than the sum of its proper divisors (11857).

25623959 is an equidigital number, since it uses as much as digits as its factorization.

25623959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11856.

The product of its digits is 145800, while the sum is 41.

The square root of 25623959 is about 5062.0113591338. The cubic root of 25623959 is about 294.8144346715.

The spelling of 25623959 in words is "twenty-five million, six hundred twenty-three thousand, nine hundred fifty-nine".