252526262509 has 2 divisors, whose sum is σ = 252526262510. Its totient is φ = 252526262508.

The previous prime is 252526262449. The next prime is 252526262531. The reversal of 252526262509 is 905262625252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252521325225 + 4937284 = 502515^2 + 2222^2 .

It is a cyclic number.

It is not a de Polignac number, because 252526262509 - 2⁹ = 252526261997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252526260509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126263131254 + 126263131255.

It is an arithmetic number, because the mean of its divisors is an integer number (126263131255).

Almost surely, 2^252526262509 is an apocalyptic number.

It is an amenable number.

252526262509 is a deficient number, since it is larger than the sum of its proper divisors (1).

252526262509 is an equidigital number, since it uses as much as digits as its factorization.

252526262509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 252526262509 in words is "two hundred fifty-two billion, five hundred twenty-six million, two hundred sixty-two thousand, five hundred nine".