25115322361 has 2 divisors, whose sum is σ = 25115322362. Its totient is φ = 25115322360.

The previous prime is 25115322301. The next prime is 25115322383. The reversal of 25115322361 is 16322351152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13347411961 + 11767910400 = 115531^2 + 108480^2 .

It is a cyclic number.

It is not a de Polignac number, because 25115322361 - 2²⁷ = 24981104633 is a prime.

It is a super-4 number, since 4×25115322361⁴ (a number of 43 digits) contains 4444 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 (25115322301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12557661180 + 12557661181.

It is an arithmetic number, because the mean of its divisors is an integer number (12557661181).

Almost surely, 2^25115322361 is an apocalyptic number.

It is an amenable number.

25115322361 is a deficient number, since it is larger than the sum of its proper divisors (1).

25115322361 is an equidigital number, since it uses as much as digits as its factorization.

25115322361 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.

The spelling of 25115322361 in words is "twenty-five billion, one hundred fifteen million, three hundred twenty-two thousand, three hundred sixty-one".