2256645653650 has 12 divisors (see below), whose sum is σ = 4197360915882. Its totient is φ = 902658261440.

The previous prime is 2256645653641. The next prime is 2256645653659. The reversal of 2256645653650 is 563565466522.

It is an interprime number because it is at equal distance from previous prime (2256645653641) and next prime (2256645653659).

It can be written as a sum of positive squares in 3 ways, for example, as 1313157856761 + 943487796889 = 1145931^2 + 971333^2 .

It is a super-2 number, since 2×2256645653650² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2256645653591 and 2256645653600.

It is not an unprimeable number, because it can be changed into a prime (2256645653659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22566456487 + ... + 22566456586.

Almost surely, 2^{2256645653650} is an apocalyptic number.

2256645653650 is a deficient number, since it is larger than the sum of its proper divisors (1940715262232).

2256645653650 is a wasteful number, since it uses less digits than its factorization.

2256645653650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45132913085 (or 45132913080 counting only the distinct ones).

The product of its (nonzero) digits is 38880000, while the sum is 55.

The spelling of 2256645653650 in words is "two trillion, two hundred fifty-six billion, six hundred forty-five million, six hundred fifty-three thousand, six hundred fifty".