25313313 has 4 divisors (see below), whose sum is σ = 33751088. Its totient is φ = 16875540.

The previous prime is 25313287. The next prime is 25313333. The reversal of 25313313 is 31331352.

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 25313313 - 2¹⁰ = 25312289 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 25313313.

It is not an unprimeable number, because it can be changed into a prime (25313333) 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, 4218883 + ... + 4218888.

It is an arithmetic number, because the mean of its divisors is an integer number (8437772).

Almost surely, 2^25313313 is an apocalyptic number.

It is an amenable number.

25313313 is a deficient number, since it is larger than the sum of its proper divisors (8437775).

25313313 is an equidigital number, since it uses as much as digits as its factorization.

25313313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8437774.

The product of its digits is 810, while the sum is 21.

The square root of 25313313 is about 5031.2337453154. The cubic root of 25313313 is about 293.6182165477.

Adding to 25313313 its reverse (31331352), we get a palindrome (56644665).

The spelling of 25313313 in words is "twenty-five million, three hundred thirteen thousand, three hundred thirteen".