2255878308637 has 4 divisors (see below), whose sum is σ = 2292859920316. Its totient is φ = 2218896696960.

The previous prime is 2255878308631. The next prime is 2255878308647. The reversal of 2255878308637 is 7368038785522.

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 995353410276 + 1260524898361 = 997674^2 + 1122731^2 .

It is a cyclic number.

It is not a de Polignac number, because 2255878308637 - 2¹⁵ = 2255878275869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255878308631) 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, 18490805748 + ... + 18490805869.

It is an arithmetic number, because the mean of its divisors is an integer number (573214980079).

Almost surely, 2^{2255878308637} is an apocalyptic number.

It is an amenable number.

2255878308637 is a deficient number, since it is larger than the sum of its proper divisors (36981611679).

2255878308637 is an equidigital number, since it uses as much as digits as its factorization.

2255878308637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36981611678.

The product of its (nonzero) digits is 135475200, while the sum is 64.

The spelling of 2255878308637 in words is "two trillion, two hundred fifty-five billion, eight hundred seventy-eight million, three hundred eight thousand, six hundred thirty-seven".