252785473 has 2 divisors, whose sum is σ = 252785474. Its totient is φ = 252785472.

The previous prime is 252785471. The next prime is 252785483. The reversal of 252785473 is 374587252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141419664 + 111365809 = 11892^2 + 10553^2 .

It is a cyclic number.

It is not a de Polignac number, because 252785473 - 2¹ = 252785471 is a prime.

Together with 252785471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (252785471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126392736 + 126392737.

It is an arithmetic number, because the mean of its divisors is an integer number (126392737).

Almost surely, 2^252785473 is an apocalyptic number.

It is an amenable number.

252785473 is a deficient number, since it is larger than the sum of its proper divisors (1).

252785473 is an equidigital number, since it uses as much as digits as its factorization.

252785473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 43.

The square root of 252785473 is about 15899.2286919838. The cubic root of 252785473 is about 632.2915396704.

The spelling of 252785473 in words is "two hundred fifty-two million, seven hundred eighty-five thousand, four hundred seventy-three".