25631423 has 4 divisors (see below), whose sum is σ = 25644528. Its totient is φ = 25618320.

The previous prime is 25631387. The next prime is 25631443. The reversal of 25631423 is 32413652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25631423 - 2⁸ = 25631167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25631392 and 25631401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25631443) 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, 2963 + ... + 7748.

It is an arithmetic number, because the mean of its divisors is an integer number (6411132).

Almost surely, 2^25631423 is an apocalyptic number.

25631423 is a deficient number, since it is larger than the sum of its proper divisors (13105).

25631423 is a wasteful number, since it uses less digits than its factorization.

25631423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13104.

The product of its digits is 4320, while the sum is 26.

The square root of 25631423 is about 5062.7485617992. The cubic root of 25631423 is about 294.8430573798.

The spelling of 25631423 in words is "twenty-five million, six hundred thirty-one thousand, four hundred twenty-three".