252869681 has 2 divisors, whose sum is σ = 252869682. Its totient is φ = 252869680.

The previous prime is 252869671. The next prime is 252869741. The reversal of 252869681 is 186968252.

252869681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160402225 + 92467456 = 12665^2 + 9616^2 .

It is a cyclic number.

It is not a de Polignac number, because 252869681 - 2¹⁰ = 252868657 is a prime.

It is a super-2 number, since 2×252869681² = 127886151138083522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (252869641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126434840 + 126434841.

It is an arithmetic number, because the mean of its divisors is an integer number (126434841).

Almost surely, 2^252869681 is an apocalyptic number.

It is an amenable number.

252869681 is a deficient number, since it is larger than the sum of its proper divisors (1).

252869681 is an equidigital number, since it uses as much as digits as its factorization.

252869681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 47.

The square root of 252869681 is about 15901.8766502574. The cubic root of 252869681 is about 632.3617416144.

The spelling of 252869681 in words is "two hundred fifty-two million, eight hundred sixty-nine thousand, six hundred eighty-one".