25216713 has 6 divisors (see below), whose sum is σ = 36424154. Its totient is φ = 16811136.

The previous prime is 25216693. The next prime is 25216727. The reversal of 25216713 is 31761252.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17665209 + 7551504 = 4203^2 + 2748^2 .

It is not a de Polignac number, because 25216713 - 2⁹ = 25216201 is a prime.

It is a super-2 number, since 2×25216713² = 1271765229048738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25216753) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1400920 + ... + 1400937.

Almost surely, 2^25216713 is an apocalyptic number.

It is an amenable number.

25216713 is a deficient number, since it is larger than the sum of its proper divisors (11207441).

25216713 is a wasteful number, since it uses less digits than its factorization.

25216713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2801863 (or 2801860 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 25216713 is about 5021.6245379359. The cubic root of 25216713 is about 293.2442410505.

Adding to 25216713 its reverse (31761252), we get a palindrome (56977965).

The spelling of 25216713 in words is "twenty-five million, two hundred sixteen thousand, seven hundred thirteen".