25623131 has 8 divisors (see below), whose sum is σ = 27708480. Its totient is φ = 23602048.

The previous prime is 25623109. The next prime is 25623149. The reversal of 25623131 is 13132652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25623131 is a prime.

It is a super-2 number, since 2×25623131² = 1313089684486322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25623097 and 25623106.

It is not an unprimeable number, because it can be changed into a prime (25623161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15236 + ... + 16833.

It is an arithmetic number, because the mean of its divisors is an integer number (3463560).

Almost surely, 2^25623131 is an apocalyptic number.

25623131 is a deficient number, since it is larger than the sum of its proper divisors (2085349).

25623131 is a wasteful number, since it uses less digits than its factorization.

25623131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32133.

The product of its digits is 1080, while the sum is 23.

The square root of 25623131 is about 5061.9295728013. The cubic root of 25623131 is about 294.8112591411.

Adding to 25623131 its reverse (13132652), we get a palindrome (38755783).

The spelling of 25623131 in words is "twenty-five million, six hundred twenty-three thousand, one hundred thirty-one".