2520000257 has 2 divisors, whose sum is σ = 2520000258. Its totient is φ = 2520000256.

The previous prime is 2520000187. The next prime is 2520000277. The reversal of 2520000257 is 7520000252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1711394161 + 808606096 = 41369^2 + 28436^2 .

It is a cyclic number.

It is not a de Polignac number, because 2520000257 - 2¹⁶ = 2519934721 is a prime.

It is not a weakly prime, because it can be changed into another prime (2520000277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260000128 + 1260000129.

It is an arithmetic number, because the mean of its divisors is an integer number (1260000129).

Almost surely, 2^2520000257 is an apocalyptic number.

It is an amenable number.

2520000257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2520000257 is an equidigital number, since it uses as much as digits as its factorization.

2520000257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 23.

The square root of 2520000257 is about 50199.6041518257. The cubic root of 2520000257 is about 1360.8184694513.

The spelling of 2520000257 in words is "two billion, five hundred twenty million, two hundred fifty-seven", and thus it is an aban number.