252455305 has 4 divisors (see below), whose sum is σ = 302946372. Its totient is φ = 201964240.

The previous prime is 252455297. The next prime is 252455317. The reversal of 252455305 is 503554252.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162129289 + 90326016 = 12733^2 + 9504^2 .

It is not a de Polignac number, because 252455305 - 2³ = 252455297 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25245526 + ... + 25245535.

It is an arithmetic number, because the mean of its divisors is an integer number (75736593).

Almost surely, 2^252455305 is an apocalyptic number.

It is an amenable number.

252455305 is a deficient number, since it is larger than the sum of its proper divisors (50491067).

252455305 is an equidigital number, since it uses as much as digits as its factorization.

252455305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50491066.

The product of its (nonzero) digits is 30000, while the sum is 31.

The square root of 252455305 is about 15888.8421541659. The cubic root of 252455305 is about 632.0161369925.

The spelling of 252455305 in words is "two hundred fifty-two million, four hundred fifty-five thousand, three hundred five".