25253231 has 4 divisors (see below), whose sum is σ = 25498512. Its totient is φ = 25007952.

The previous prime is 25253213. The next prime is 25253237. The reversal of 25253231 is 13235252.

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 25253231 - 2⁶ = 25253167 is a prime.

It is a super-2 number, since 2×25253231² = 1275451351878722, 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 = 25253197 and 25253206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25253237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122486 + ... + 122691.

It is an arithmetic number, because the mean of its divisors is an integer number (6374628).

Almost surely, 2^25253231 is an apocalyptic number.

25253231 is a deficient number, since it is larger than the sum of its proper divisors (245281).

25253231 is a wasteful number, since it uses less digits than its factorization.

25253231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245280.

The product of its digits is 1800, while the sum is 23.

The square root of 25253231 is about 5025.2592967926. The cubic root of 25253231 is about 293.3857282727.

Adding to 25253231 its reverse (13235252), we get a palindrome (38488483).

The spelling of 25253231 in words is "twenty-five million, two hundred fifty-three thousand, two hundred thirty-one".