25132231 has 4 divisors (see below), whose sum is σ = 26455000. Its totient is φ = 23809464.

The previous prime is 25132207. The next prime is 25132249. The reversal of 25132231 is 13223152.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25132231 is a prime.

It is a super-2 number, since 2×25132231² = 1263258070074722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1322749 = 25132231 / (2 + 5 + 1 + 3 + 2 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25132199 and 25132208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25132291) 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, 661356 + ... + 661393.

It is an arithmetic number, because the mean of its divisors is an integer number (6613750).

Almost surely, 2^25132231 is an apocalyptic number.

25132231 is a deficient number, since it is larger than the sum of its proper divisors (1322769).

25132231 is a wasteful number, since it uses less digits than its factorization.

25132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322768.

The product of its digits is 360, while the sum is 19.

The square root of 25132231 is about 5013.2056610516. The cubic root of 25132231 is about 292.9163952855.

Adding to 25132231 its reverse (13223152), we get a palindrome (38355383).

The spelling of 25132231 in words is "twenty-five million, one hundred thirty-two thousand, two hundred thirty-one".