25623957 has 4 divisors (see below), whose sum is σ = 34165280. Its totient is φ = 17082636.

The previous prime is 25623953. The next prime is 25623973. The reversal of 25623957 is 75932652.

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 not a de Polignac number, because 25623957 - 2² = 25623953 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, 4270657 + ... + 4270662.

It is an arithmetic number, because the mean of its divisors is an integer number (8541320).

Almost surely, 2^25623957 is an apocalyptic number.

It is an amenable number.

25623957 is a deficient number, since it is larger than the sum of its proper divisors (8541323).

25623957 is an equidigital number, since it uses as much as digits as its factorization.

25623957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8541322.

The product of its digits is 113400, while the sum is 39.

The square root of 25623957 is about 5062.0111615839. The cubic root of 25623957 is about 294.8144270012.

The spelling of 25623957 in words is "twenty-five million, six hundred twenty-three thousand, nine hundred fifty-seven".