252805529 has 4 divisors (see below), whose sum is σ = 252837684. Its totient is φ = 252773376.

The previous prime is 252805519. The next prime is 252805537. The reversal of 252805529 is 925508252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 79619929 + 173185600 = 8923^2 + 13160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252805529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252805492 and 252805501.

It is not an unprimeable number, because it can be changed into a prime (252805519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4469 + ... + 22925.

It is an arithmetic number, because the mean of its divisors is an integer number (63209421).

Almost surely, 2^252805529 is an apocalyptic number.

It is an amenable number.

252805529 is a deficient number, since it is larger than the sum of its proper divisors (32155).

252805529 is a wasteful number, since it uses less digits than its factorization.

252805529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32154.

The product of its (nonzero) digits is 72000, while the sum is 38.

The square root of 252805529 is about 15899.8594018941. The cubic root of 252805529 is about 632.3082612323.

The spelling of 252805529 in words is "two hundred fifty-two million, eight hundred five thousand, five hundred twenty-nine".