255525354220391 has 4 divisors (see below), whose sum is σ = 255525402499392. Its totient is φ = 255525305941392.

The previous prime is 255525354220369. The next prime is 255525354220397. The reversal of 255525354220391 is 193022453525552.

255525354220391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 255525354220391 - 2³⁴ = 255508174351207 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 (255525354220397) 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, 15062846 + ... + 27165051.

It is an arithmetic number, because the mean of its divisors is an integer number (63881350624848).

Almost surely, 2^{255525354220391} is an apocalyptic number.

255525354220391 is a deficient number, since it is larger than the sum of its proper divisors (48279001).

255525354220391 is an equidigital number, since it uses as much as digits as its factorization.

255525354220391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48279000.

The product of its (nonzero) digits is 16200000, while the sum is 53.

The spelling of 255525354220391 in words is "two hundred fifty-five trillion, five hundred twenty-five billion, three hundred fifty-four million, two hundred twenty thousand, three hundred ninety-one".