25317013 has 8 divisors (see below), whose sum is σ = 25885496. Its totient is φ = 24753600.

The previous prime is 25317011. The next prime is 25317023. The reversal of 25317013 is 31071352.

It can be written as a sum of positive squares in 4 ways, for example, as 3104644 + 22212369 = 1762^2 + 4713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25317013 - 2¹ = 25317011 is a prime.

It is a super-2 number, since 2×25317013² = 1281902294484338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25317011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9895 + ... + 12187.

It is an arithmetic number, because the mean of its divisors is an integer number (3235687).

Almost surely, 2^25317013 is an apocalyptic number.

It is an amenable number.

25317013 is a deficient number, since it is larger than the sum of its proper divisors (568483).

25317013 is a wasteful number, since it uses less digits than its factorization.

25317013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2535.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 25317013 is about 5031.6014349310. The cubic root of 25317013 is about 293.6325217274.

Adding to 25317013 its reverse (31071352), we get a palindrome (56388365).

The spelling of 25317013 in words is "twenty-five million, three hundred seventeen thousand, thirteen".