252858505369 has 2 divisors, whose sum is σ = 252858505370. Its totient is φ = 252858505368.

The previous prime is 252858505313. The next prime is 252858505399. The reversal of 252858505369 is 963505858252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232624865344 + 20233640025 = 482312^2 + 142245^2 .

It is a cyclic number.

It is not a de Polignac number, because 252858505369 - 2⁷ = 252858505241 is a prime.

It is a super-2 number, since 2×252858505369² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (252858505399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126429252684 + 126429252685.

It is an arithmetic number, because the mean of its divisors is an integer number (126429252685).

Almost surely, 2^252858505369 is an apocalyptic number.

It is an amenable number.

252858505369 is a deficient number, since it is larger than the sum of its proper divisors (1).

252858505369 is an equidigital number, since it uses as much as digits as its factorization.

252858505369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920000, while the sum is 58.

The spelling of 252858505369 in words is "two hundred fifty-two billion, eight hundred fifty-eight million, five hundred five thousand, three hundred sixty-nine".