2445257257 has 2 divisors, whose sum is σ = 2445257258. Its totient is φ = 2445257256.

The previous prime is 2445257251. The next prime is 2445257263. The reversal of 2445257257 is 7527525442.

It is a balanced prime because it is at equal distance from previous prime (2445257251) and next prime (2445257263).

It can be written as a sum of positive squares in only one way, i.e., 2095716841 + 349540416 = 45779^2 + 18696^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2445257257 is a prime.

It is a super-2 number, since 2×2445257257² = 11958566105822328098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2445257251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222628628 + 1222628629.

It is an arithmetic number, because the mean of its divisors is an integer number (1222628629).

Almost surely, 2^2445257257 is an apocalyptic number.

It is an amenable number.

2445257257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2445257257 is an equidigital number, since it uses as much as digits as its factorization.

2445257257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 784000, while the sum is 43.

The square root of 2445257257 is about 49449.5425358011. The cubic root of 2445257257 is about 1347.2292980840.

The spelling of 2445257257 in words is "two billion, four hundred forty-five million, two hundred fifty-seven thousand, two hundred fifty-seven".