252788829409 has 4 divisors (see below), whose sum is σ = 252806986516. Its totient is φ = 252770672304.

The previous prime is 252788829373. The next prime is 252788829413. The reversal of 252788829409 is 904928887252.

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 245961443025 + 6827386384 = 495945^2 + 82628^2 .

It is a cyclic number.

It is not a de Polignac number, because 252788829409 - 2¹³ = 252788821217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252788829109) 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, 9057654 + ... + 9085519.

It is an arithmetic number, because the mean of its divisors is an integer number (63201746629).

Almost surely, 2^252788829409 is an apocalyptic number.

It is an amenable number.

252788829409 is a deficient number, since it is larger than the sum of its proper divisors (18157107).

252788829409 is a wasteful number, since it uses less digits than its factorization.

252788829409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18157106.

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 252788829409 in words is "two hundred fifty-two billion, seven hundred eighty-eight million, eight hundred twenty-nine thousand, four hundred nine".