25045201361 has 2 divisors, whose sum is σ = 25045201362. Its totient is φ = 25045201360.

The previous prime is 25045201343. The next prime is 25045201381. The reversal of 25045201361 is 16310254052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16935118225 + 8110083136 = 130135^2 + 90056^2 .

It is a cyclic number.

It is not a de Polignac number, because 25045201361 - 2¹⁰ = 25045200337 is a prime.

It is a super-2 number, since 2×25045201361² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25045201381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12522600680 + 12522600681.

It is an arithmetic number, because the mean of its divisors is an integer number (12522600681).

Almost surely, 2^25045201361 is an apocalyptic number.

It is an amenable number.

25045201361 is a deficient number, since it is larger than the sum of its proper divisors (1).

25045201361 is an equidigital number, since it uses as much as digits as its factorization.

25045201361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 29.

The spelling of 25045201361 in words is "twenty-five billion, forty-five million, two hundred one thousand, three hundred sixty-one".