25313213 has 4 divisors (see below), whose sum is σ = 25851840. Its totient is φ = 24774588.

The previous prime is 25313191. The next prime is 25313237. The reversal of 25313213 is 31231352.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25313213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25318213) 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, 269243 + ... + 269336.

It is an arithmetic number, because the mean of its divisors is an integer number (6462960).

Almost surely, 2^25313213 is an apocalyptic number.

It is an amenable number.

25313213 is a deficient number, since it is larger than the sum of its proper divisors (538627).

25313213 is an equidigital number, since it uses as much as digits as its factorization.

25313213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538626.

The product of its digits is 540, while the sum is 20.

The square root of 25313213 is about 5031.2238073852. The cubic root of 25313213 is about 293.6178299019.

Adding to 25313213 its reverse (31231352), we get a palindrome (56544565).

The spelling of 25313213 in words is "twenty-five million, three hundred thirteen thousand, two hundred thirteen".