25231413 has 4 divisors (see below), whose sum is σ = 33641888. Its totient is φ = 16820940.

The previous prime is 25231403. The next prime is 25231477. The reversal of 25231413 is 31413252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 25231413 - 2⁴ = 25231397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25231413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25231403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4205233 + ... + 4205238.

It is an arithmetic number, because the mean of its divisors is an integer number (8410472).

Almost surely, 2^25231413 is an apocalyptic number.

It is an amenable number.

25231413 is a deficient number, since it is larger than the sum of its proper divisors (8410475).

25231413 is an equidigital number, since it uses as much as digits as its factorization.

25231413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8410474.

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

The square root of 25231413 is about 5023.0879944512. The cubic root of 25231413 is about 293.3012119039.

Adding to 25231413 its reverse (31413252), we get a palindrome (56644665).

The spelling of 25231413 in words is "twenty-five million, two hundred thirty-one thousand, four hundred thirteen".