25115401361 has 2 divisors, whose sum is σ = 25115401362. Its totient is φ = 25115401360.

The previous prime is 25115401349. The next prime is 25115401373. The reversal of 25115401361 is 16310451152.

It is a balanced prime because it is at equal distance from previous prime (25115401349) and next prime (25115401373).

It can be written as a sum of positive squares in only one way, i.e., 24606628225 + 508773136 = 156865^2 + 22556^2 .

It is a cyclic number.

It is not a de Polignac number, because 25115401361 - 2²⁶ = 25048292497 is a prime.

It is not a weakly prime, because it can be changed into another prime (25115401391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12557700680 + 12557700681.

It is an arithmetic number, because the mean of its divisors is an integer number (12557700681).

Almost surely, 2^25115401361 is an apocalyptic number.

It is an amenable number.

25115401361 is a deficient number, since it is larger than the sum of its proper divisors (1).

25115401361 is an equidigital number, since it uses as much as digits as its factorization.

25115401361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 25115401361 in words is "twenty-five billion, one hundred fifteen million, four hundred one thousand, three hundred sixty-one".