25127231 has 4 divisors (see below), whose sum is σ = 25182672. Its totient is φ = 25071792.

The previous prime is 25127227. The next prime is 25127237. The reversal of 25127231 is 13272152.

It is a happy number.

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 25127231 - 2² = 25127227 is a prime.

It is a super-2 number, since 2×25127231² = 1262755475454722, 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 = 25127197 and 25127206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25127237) 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, 27035 + ... + 27948.

It is an arithmetic number, because the mean of its divisors is an integer number (6295668).

Almost surely, 2^25127231 is an apocalyptic number.

25127231 is a deficient number, since it is larger than the sum of its proper divisors (55441).

25127231 is an equidigital number, since it uses as much as digits as its factorization.

25127231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55440.

The product of its digits is 840, while the sum is 23.

The square root of 25127231 is about 5012.7069533337. The cubic root of 25127231 is about 292.8969689811.

Adding to 25127231 its reverse (13272152), we get a palindrome (38399383).

The spelling of 25127231 in words is "twenty-five million, one hundred twenty-seven thousand, two hundred thirty-one".