25611413 has 6 divisors (see below), whose sum is σ = 25864566. Its totient is φ = 25360712.

The previous prime is 25611407. The next prime is 25611427. The reversal of 25611413 is 31411652.

It can be written as a sum of positive squares in only one way, i.e., 24226084 + 1385329 = 4922^2 + 1177^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25611413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25611463) 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, 10331 + ... + 12567.

It is an arithmetic number, because the mean of its divisors is an integer number (4310761).

Almost surely, 2^25611413 is an apocalyptic number.

It is an amenable number.

25611413 is a deficient number, since it is larger than the sum of its proper divisors (253153).

25611413 is an equidigital number, since it uses as much as digits as its factorization.

25611413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2451 (or 2344 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 25611413 is about 5060.7719766850. The cubic root of 25611413 is about 294.7663111462.

The spelling of 25611413 in words is "twenty-five million, six hundred eleven thousand, four hundred thirteen".