25313013 has 16 divisors (see below), whose sum is σ = 40910400. Its totient is φ = 15341040.

The previous prime is 25313009. The next prime is 25313021. The reversal of 25313013 is 31031352.

It is not a de Polignac number, because 25313013 - 2² = 25313009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25313003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42318 + ... + 42911.

It is an arithmetic number, because the mean of its divisors is an integer number (2556900).

Almost surely, 2^25313013 is an apocalyptic number.

It is an amenable number.

25313013 is a deficient number, since it is larger than the sum of its proper divisors (15597387).

25313013 is a wasteful number, since it uses less digits than its factorization.

25313013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85249 (or 85243 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 25313013 is about 5031.2039314661. The cubic root of 25313013 is about 293.6170566072.

Adding to 25313013 its reverse (31031352), we get a palindrome (56344365).

The spelling of 25313013 in words is "twenty-five million, three hundred thirteen thousand, thirteen".