25162251313 has 2 divisors, whose sum is σ = 25162251314. Its totient is φ = 25162251312.

The previous prime is 25162251307. The next prime is 25162251347. The reversal of 25162251313 is 31315226152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20416694769 + 4745556544 = 142887^2 + 68888^2 .

It is a cyclic number.

It is not a de Polignac number, because 25162251313 - 2³³ = 16572316721 is a prime.

It is a super-2 number, since 2×25162251313² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25162251613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12581125656 + 12581125657.

It is an arithmetic number, because the mean of its divisors is an integer number (12581125657).

Almost surely, 2^25162251313 is an apocalyptic number.

It is an amenable number.

25162251313 is a deficient number, since it is larger than the sum of its proper divisors (1).

25162251313 is an equidigital number, since it uses as much as digits as its factorization.

25162251313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 31.

Adding to 25162251313 its reverse (31315226152), we get a palindrome (56477477465).

The spelling of 25162251313 in words is "twenty-five billion, one hundred sixty-two million, two hundred fifty-one thousand, three hundred thirteen".