25613313 has 12 divisors (see below), whose sum is σ = 37298064. Its totient is φ = 15505600.

The previous prime is 25613309. The next prime is 25613323. The reversal of 25613313 is 31331652.

It is a happy number.

It is not a de Polignac number, because 25613313 - 2² = 25613309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25613303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28633 + ... + 29513.

It is an arithmetic number, because the mean of its divisors is an integer number (3108172).

Almost surely, 2^25613313 is an apocalyptic number.

It is an amenable number.

25613313 is a deficient number, since it is larger than the sum of its proper divisors (11684751).

25613313 is an frugal number, since it uses more digits than its factorization.

25613313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776 (or 895 counting only the distinct ones).

The product of its digits is 1620, while the sum is 24.

The square root of 25613313 is about 5060.9596916000. The cubic root of 25613313 is about 294.7736001120.

Adding to 25613313 its reverse (31331652), we get a palindrome (56944965).

The spelling of 25613313 in words is "twenty-five million, six hundred thirteen thousand, three hundred thirteen".