2256156377 has 4 divisors (see below), whose sum is σ = 2388871476. Its totient is φ = 2123441280.

The previous prime is 2256156373. The next prime is 2256156389. The reversal of 2256156377 is 7736516522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1833894976 + 422261401 = 42824^2 + 20549^2 .

It is a cyclic number.

It is not a de Polignac number, because 2256156377 - 2² = 2256156373 is a prime.

It is a super-2 number, since 2×2256156377² = 10180483194955532258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256156373) 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 3 ways as a sum of consecutive naturals, for example, 66357524 + ... + 66357557.

It is an arithmetic number, because the mean of its divisors is an integer number (597217869).

Almost surely, 2^2256156377 is an apocalyptic number.

It is an amenable number.

2256156377 is a deficient number, since it is larger than the sum of its proper divisors (132715099).

2256156377 is a wasteful number, since it uses less digits than its factorization.

2256156377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132715098.

The product of its digits is 529200, while the sum is 44.

The square root of 2256156377 is about 47499.0144845133. The cubic root of 2256156377 is about 1311.5647399943.

The spelling of 2256156377 in words is "two billion, two hundred fifty-six million, one hundred fifty-six thousand, three hundred seventy-seven".