252305407 has 2 divisors, whose sum is σ = 252305408. Its totient is φ = 252305406.

The previous prime is 252305393. The next prime is 252305413. The reversal of 252305407 is 704503252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252305407 - 2¹⁹ = 251781119 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252305507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126152703 + 126152704.

It is an arithmetic number, because the mean of its divisors is an integer number (126152704).

Almost surely, 2^252305407 is an apocalyptic number.

252305407 is a deficient number, since it is larger than the sum of its proper divisors (1).

252305407 is an equidigital number, since it uses as much as digits as its factorization.

252305407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 252305407 is about 15884.1243699488. The cubic root of 252305407 is about 631.8910234777.

Adding to 252305407 its reverse (704503252), we get a palindrome (956808659).

The spelling of 252305407 in words is "two hundred fifty-two million, three hundred five thousand, four hundred seven".