2125320257 has 2 divisors, whose sum is σ = 2125320258. Its totient is φ = 2125320256.

The previous prime is 2125320203. The next prime is 2125320271. The reversal of 2125320257 is 7520235212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2030043136 + 95277121 = 45056^2 + 9761^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125320257 - 2¹² = 2125316161 is a prime.

It is not a weakly prime, because it can be changed into another prime (2125320277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062660128 + 1062660129.

It is an arithmetic number, because the mean of its divisors is an integer number (1062660129).

Almost surely, 2^2125320257 is an apocalyptic number.

It is an amenable number.

2125320257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125320257 is an equidigital number, since it uses as much as digits as its factorization.

2125320257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 2125320257 is about 46101.1958304771. The cubic root of 2125320257 is about 1285.7053780400.

Adding to 2125320257 its reverse (7520235212), we get a palindrome (9645555469).

The spelling of 2125320257 in words is "two billion, one hundred twenty-five million, three hundred twenty thousand, two hundred fifty-seven".