2225256557 has 2 divisors, whose sum is σ = 2225256558. Its totient is φ = 2225256556.

The previous prime is 2225256529. The next prime is 2225256559. The reversal of 2225256557 is 7556525222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1762404361 + 462852196 = 41981^2 + 21514^2 .

It is a cyclic number.

It is not a de Polignac number, because 2225256557 - 2⁸ = 2225256301 is a prime.

Together with 2225256559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2225256559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112628278 + 1112628279.

It is an arithmetic number, because the mean of its divisors is an integer number (1112628279).

Almost surely, 2^2225256557 is an apocalyptic number.

It is an amenable number.

2225256557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2225256557 is an equidigital number, since it uses as much as digits as its factorization.

2225256557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420000, while the sum is 41.

The square root of 2225256557 is about 47172.6250806546. The cubic root of 2225256557 is about 1305.5495612093.

The spelling of 2225256557 in words is "two billion, two hundred twenty-five million, two hundred fifty-six thousand, five hundred fifty-seven".