2562513397 has 2 divisors, whose sum is σ = 2562513398. Its totient is φ = 2562513396.

The previous prime is 2562513389. The next prime is 2562513409. The reversal of 2562513397 is 7933152652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1862699281 + 699814116 = 43159^2 + 26454^2 .

It is a cyclic number.

It is not a de Polignac number, because 2562513397 - 2³ = 2562513389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2562513347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281256698 + 1281256699.

It is an arithmetic number, because the mean of its divisors is an integer number (1281256699).

Almost surely, 2^2562513397 is an apocalyptic number.

It is an amenable number.

2562513397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2562513397 is an equidigital number, since it uses as much as digits as its factorization.

2562513397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 43.

The square root of 2562513397 is about 50621.2741542526. The cubic root of 2562513397 is about 1368.4283034502.

The spelling of 2562513397 in words is "two billion, five hundred sixty-two million, five hundred thirteen thousand, three hundred ninety-seven".