2256132655531 has 4 divisors (see below), whose sum is σ = 2256437834392. Its totient is φ = 2255827476672.

The previous prime is 2256132655507. The next prime is 2256132655561. The reversal of 2256132655531 is 1355562316522.

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

It is a cyclic number.

It is not a de Polignac number, because 2256132655531 - 2²³ = 2256124266923 is a prime.

It is a super-2 number, since 2×2256132655531² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2256132655561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152578341 + ... + 152593126.

It is an arithmetic number, because the mean of its divisors is an integer number (564109458598).

Almost surely, 2^{2256132655531} is an apocalyptic number.

2256132655531 is a deficient number, since it is larger than the sum of its proper divisors (305178861).

2256132655531 is an equidigital number, since it uses as much as digits as its factorization.

2256132655531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305178860.

The product of its digits is 1620000, while the sum is 46.

The spelling of 2256132655531 in words is "two trillion, two hundred fifty-six billion, one hundred thirty-two million, six hundred fifty-five thousand, five hundred thirty-one".