2251256568 has 32 divisors (see below), whose sum is σ = 6139791360. Its totient is φ = 682198880.

The previous prime is 2251256561. The next prime is 2251256587. The reversal of 2251256568 is 8656521522.

It is a super-2 number, since 2×2251256568² = 10136312269926277248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251256561) 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 in 7 ways as a sum of consecutive naturals, for example, 4263480 + ... + 4264007.

It is an arithmetic number, because the mean of its divisors is an integer number (191868480).

Almost surely, 2^2251256568 is an apocalyptic number.

It is an amenable number.

2251256568 is an abundant number, since it is smaller than the sum of its proper divisors (3888534792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251256568 is a wasteful number, since it uses less digits than its factorization.

2251256568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8527507 (or 8527503 counting only the distinct ones).

The product of its digits is 288000, while the sum is 42.

The square root of 2251256568 is about 47447.4084434545. The cubic root of 2251256568 is about 1310.6145879872.

The spelling of 2251256568 in words is "two billion, two hundred fifty-one million, two hundred fifty-six thousand, five hundred sixty-eight".