2155625441 has 2 divisors, whose sum is σ = 2155625442. Its totient is φ = 2155625440.

The previous prime is 2155625413. The next prime is 2155625447. The reversal of 2155625441 is 1445265512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1977669841 + 177955600 = 44471^2 + 13340^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155625441 - 2⁶ = 2155625377 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2155625447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077812720 + 1077812721.

It is an arithmetic number, because the mean of its divisors is an integer number (1077812721).

Almost surely, 2^2155625441 is an apocalyptic number.

It is an amenable number.

2155625441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155625441 is an equidigital number, since it uses as much as digits as its factorization.

2155625441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48000, while the sum is 35.

The square root of 2155625441 is about 46428.7135402221. The cubic root of 2155625441 is about 1291.7875666748.

The spelling of 2155625441 in words is "two billion, one hundred fifty-five million, six hundred twenty-five thousand, four hundred forty-one".