2125659469 has 2 divisors, whose sum is σ = 2125659470. Its totient is φ = 2125659468.

The previous prime is 2125659451. The next prime is 2125659521. The reversal of 2125659469 is 9649565212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1588022500 + 537636969 = 39850^2 + 23187^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125659469 - 2²³ = 2117270861 is a prime.

It is a super-2 number, since 2×2125659469² = 9036856356298723922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2125659449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062829734 + 1062829735.

It is an arithmetic number, because the mean of its divisors is an integer number (1062829735).

Almost surely, 2^2125659469 is an apocalyptic number.

It is an amenable number.

2125659469 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125659469 is an equidigital number, since it uses as much as digits as its factorization.

2125659469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 49.

The square root of 2125659469 is about 46104.8746771966. The cubic root of 2125659469 is about 1285.7737761227.

The spelling of 2125659469 in words is "two billion, one hundred twenty-five million, six hundred fifty-nine thousand, four hundred sixty-nine".