2255136250565 has 64 divisors (see below), whose sum is σ = 3097357781760. Its totient is φ = 1561072343040.

The previous prime is 2255136250561. The next prime is 2255136250567. The reversal of 2255136250565 is 5650526315522.

It is a happy number.

It is not a de Polignac number, because 2255136250565 - 2² = 2255136250561 is a prime.

It is a super-2 number, since 2×2255136250565² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255136250561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 330322682 + ... + 330329508.

It is an arithmetic number, because the mean of its divisors is an integer number (48396215340).

Almost surely, 2^{2255136250565} is an apocalyptic number.

It is an amenable number.

2255136250565 is a deficient number, since it is larger than the sum of its proper divisors (842221531195).

2255136250565 is a wasteful number, since it uses less digits than its factorization.

2255136250565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9782.

The product of its (nonzero) digits is 2700000, while the sum is 47.

The spelling of 2255136250565 in words is "two trillion, two hundred fifty-five billion, one hundred thirty-six million, two hundred fifty thousand, five hundred sixty-five".