2255154781 has 8 divisors (see below), whose sum is σ = 2469053664. Its totient is φ = 2042736720.

The previous prime is 2255154749. The next prime is 2255154787. The reversal of 2255154781 is 1874515522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2255154781 - 2⁵ = 2255154749 is a prime.

It is a super-2 number, since 2×2255154781² = 10171446172534315922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255154787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367015 + ... + 373108.

It is an arithmetic number, because the mean of its divisors is an integer number (308631708).

Almost surely, 2^2255154781 is an apocalyptic number.

It is an amenable number.

2255154781 is a deficient number, since it is larger than the sum of its proper divisors (213898883).

2255154781 is a wasteful number, since it uses less digits than its factorization.

2255154781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740411.

The product of its digits is 112000, while the sum is 40.

The square root of 2255154781 is about 47488.4699795645. The cubic root of 2255154781 is about 1311.3706263159.

The spelling of 2255154781 in words is "two billion, two hundred fifty-five million, one hundred fifty-four thousand, seven hundred eighty-one".