2575221157 has 2 divisors, whose sum is σ = 2575221158. Its totient is φ = 2575221156.

The previous prime is 2575221137. The next prime is 2575221167. The reversal of 2575221157 is 7511225752.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1651121956 + 924099201 = 40634^2 + 30399^2 .

It is a cyclic number.

It is not a de Polignac number, because 2575221157 - 2²³ = 2566832549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2575221137) 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, 1287610578 + 1287610579.

It is an arithmetic number, because the mean of its divisors is an integer number (1287610579).

Almost surely, 2^2575221157 is an apocalyptic number.

It is an amenable number.

2575221157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2575221157 is an equidigital number, since it uses as much as digits as its factorization.

2575221157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49000, while the sum is 37.

The square root of 2575221157 is about 50746.6369033456. The cubic root of 2575221157 is about 1370.6866320282.

The spelling of 2575221157 in words is "two billion, five hundred seventy-five million, two hundred twenty-one thousand, one hundred fifty-seven".