25451304269 has 2 divisors, whose sum is σ = 25451304270. Its totient is φ = 25451304268.

The previous prime is 25451304257. The next prime is 25451304323. The reversal of 25451304269 is 96240315452.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22503900169 + 2947404100 = 150013^2 + 54290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25451304269 is a prime.

It is a super-2 number, since 2×25451304269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25451304209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12725652134 + 12725652135.

It is an arithmetic number, because the mean of its divisors is an integer number (12725652135).

Almost surely, 2^25451304269 is an apocalyptic number.

It is an amenable number.

25451304269 is a deficient number, since it is larger than the sum of its proper divisors (1).

25451304269 is an equidigital number, since it uses as much as digits as its factorization.

25451304269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 25451304269 in words is "twenty-five billion, four hundred fifty-one million, three hundred four thousand, two hundred sixty-nine".