25413231 has 8 divisors (see below), whose sum is σ = 34128640. Its totient is φ = 16819992.

The previous prime is 25413221. The next prime is 25413253. The reversal of 25413231 is 13231452.

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

It is not a de Polignac number, because 25413231 - 2⁷ = 25413103 is a prime.

It is a super-2 number, since 2×25413231² = 1291664619718722, 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 = 25413198 and 25413207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25413221) 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, 30055 + ... + 30888.

It is an arithmetic number, because the mean of its divisors is an integer number (4266080).

Almost surely, 2^25413231 is an apocalyptic number.

25413231 is a deficient number, since it is larger than the sum of its proper divisors (8715409).

25413231 is a wasteful number, since it uses less digits than its factorization.

25413231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61085.

The product of its digits is 720, while the sum is 21.

The square root of 25413231 is about 5041.1537369931. The cubic root of 25413231 is about 294.0040376140.

Adding to 25413231 its reverse (13231452), we get a palindrome (38644683).

The spelling of 25413231 in words is "twenty-five million, four hundred thirteen thousand, two hundred thirty-one".