2505431297 has 2 divisors, whose sum is σ = 2505431298. Its totient is φ = 2505431296.

The previous prime is 2505431281. The next prime is 2505431309. The reversal of 2505431297 is 7921345052.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2451834256 + 53597041 = 49516^2 + 7321^2 .

It is a cyclic number.

It is not a de Polignac number, because 2505431297 - 2⁴ = 2505431281 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2505431297.

It is not a weakly prime, because it can be changed into another prime (2505439297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252715648 + 1252715649.

It is an arithmetic number, because the mean of its divisors is an integer number (1252715649).

Almost surely, 2^2505431297 is an apocalyptic number.

It is an amenable number.

2505431297 is a deficient number, since it is larger than the sum of its proper divisors (1).

2505431297 is an equidigital number, since it uses as much as digits as its factorization.

2505431297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 2505431297 is about 50054.2835030130. The cubic root of 2505431297 is about 1358.1909512829.

The spelling of 2505431297 in words is "two billion, five hundred five million, four hundred thirty-one thousand, two hundred ninety-seven".