25317213 has 16 divisors (see below), whose sum is σ = 35520576. Its totient is φ = 16018560.

The previous prime is 25317211. The next prime is 25317217. The reversal of 25317213 is 31271352.

It is not a de Polignac number, because 25317213 - 2¹ = 25317211 is a prime.

It is a super-2 number, since 2×25317213² = 1281922548174738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25317211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1770 + ... + 7332.

It is an arithmetic number, because the mean of its divisors is an integer number (2220036).

Almost surely, 2^25317213 is an apocalyptic number.

It is an amenable number.

25317213 is a deficient number, since it is larger than the sum of its proper divisors (10203363).

25317213 is a wasteful number, since it uses less digits than its factorization.

25317213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5644.

The product of its digits is 1260, while the sum is 24.

The square root of 25317213 is about 5031.6213092799. The cubic root of 25317213 is about 293.6332949407.

Adding to 25317213 its reverse (31271352), we get a palindrome (56588565).

The spelling of 25317213 in words is "twenty-five million, three hundred seventeen thousand, two hundred thirteen".