25313161 has 2 divisors, whose sum is σ = 25313162. Its totient is φ = 25313160.

The previous prime is 25313147. The next prime is 25313191. The reversal of 25313161 is 16131352.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23765625 + 1547536 = 4875^2 + 1244^2 .

It is a cyclic number.

It is not a de Polignac number, because 25313161 - 2⁵ = 25313129 is a prime.

It is a super-3 number, since 3×25313161³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (25313131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12656580 + 12656581.

It is an arithmetic number, because the mean of its divisors is an integer number (12656581).

Almost surely, 2^25313161 is an apocalyptic number.

It is an amenable number.

25313161 is a deficient number, since it is larger than the sum of its proper divisors (1).

25313161 is an equidigital number, since it uses as much as digits as its factorization.

25313161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 22.

The square root of 25313161 is about 5031.2186396538. The cubic root of 25313161 is about 293.6176288457.

The spelling of 25313161 in words is "twenty-five million, three hundred thirteen thousand, one hundred sixty-one".