25275002497 has 2 divisors, whose sum is σ = 25275002498. Its totient is φ = 25275002496.

The previous prime is 25275002411. The next prime is 25275002527. The reversal of 25275002497 is 79420057252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15031740816 + 10243261681 = 122604^2 + 101209^2 .

It is a cyclic number.

It is not a de Polignac number, because 25275002497 - 2¹⁵ = 25274969729 is a prime.

It is not a weakly prime, because it can be changed into another prime (25275002897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12637501248 + 12637501249.

It is an arithmetic number, because the mean of its divisors is an integer number (12637501249).

Almost surely, 2^25275002497 is an apocalyptic number.

It is an amenable number.

25275002497 is a deficient number, since it is larger than the sum of its proper divisors (1).

25275002497 is an equidigital number, since it uses as much as digits as its factorization.

25275002497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 25275002497 in words is "twenty-five billion, two hundred seventy-five million, two thousand, four hundred ninety-seven".