2125255261 has 2 divisors, whose sum is σ = 2125255262. Its totient is φ = 2125255260.

The previous prime is 2125255243. The next prime is 2125255291. The reversal of 2125255261 is 1625525212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1847366361 + 277888900 = 42981^2 + 16670^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125255261 - 2¹⁹ = 2124730973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125255201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062627630 + 1062627631.

It is an arithmetic number, because the mean of its divisors is an integer number (1062627631).

Almost surely, 2^2125255261 is an apocalyptic number.

It is an amenable number.

2125255261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125255261 is an equidigital number, since it uses as much as digits as its factorization.

2125255261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 31.

The square root of 2125255261 is about 46100.4908976032. The cubic root of 2125255261 is about 1285.6922715355.

The spelling of 2125255261 in words is "two billion, one hundred twenty-five million, two hundred fifty-five thousand, two hundred sixty-one".