2500500257 has 2 divisors, whose sum is σ = 2500500258. Its totient is φ = 2500500256.

The previous prime is 2500500253. The next prime is 2500500271. The reversal of 2500500257 is 7520050052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1749246976 + 751253281 = 41824^2 + 27409^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500500257 - 2² = 2500500253 is a prime.

It is not a weakly prime, because it can be changed into another prime (2500500253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250250128 + 1250250129.

It is an arithmetic number, because the mean of its divisors is an integer number (1250250129).

Almost surely, 2^2500500257 is an apocalyptic number.

It is an amenable number.

2500500257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500500257 is an equidigital number, since it uses as much as digits as its factorization.

2500500257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3500, while the sum is 26.

The square root of 2500500257 is about 50005.0023197680. The cubic root of 2500500257 is about 1357.2993293541.

The spelling of 2500500257 in words is "two billion, five hundred million, five hundred thousand, two hundred fifty-seven".