2250256561 has 16 divisors (see below), whose sum is σ = 2743804800. Its totient is φ = 1801463040.

The previous prime is 2250256531. The next prime is 2250256579. The reversal of 2250256561 is 1656520522.

It is a cyclic number.

It is not a de Polignac number, because 2250256561 - 2⁵ = 2250256529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2250256501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56586 + ... + 87763.

It is an arithmetic number, because the mean of its divisors is an integer number (171487800).

Almost surely, 2^2250256561 is an apocalyptic number.

It is an amenable number.

2250256561 is a deficient number, since it is larger than the sum of its proper divisors (493548239).

2250256561 is a wasteful number, since it uses less digits than its factorization.

2250256561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144504.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 2250256561 is about 47436.8692158325. The cubic root of 2250256561 is about 1310.4205011399.

The spelling of 2250256561 in words is "two billion, two hundred fifty million, two hundred fifty-six thousand, five hundred sixty-one".