252612785 has 4 divisors (see below), whose sum is σ = 303135348. Its totient is φ = 202090224.

The previous prime is 252612781. The next prime is 252612791. The reversal of 252612785 is 587216252.

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 87310336 + 165302449 = 9344^2 + 12857^2 .

It is a cyclic number.

It is not a de Polignac number, because 252612785 - 2² = 252612781 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252612781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25261274 + ... + 25261283.

It is an arithmetic number, because the mean of its divisors is an integer number (75783837).

Almost surely, 2^252612785 is an apocalyptic number.

It is an amenable number.

252612785 is a deficient number, since it is larger than the sum of its proper divisors (50522563).

252612785 is an equidigital number, since it uses as much as digits as its factorization.

252612785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50522562.

The product of its digits is 67200, while the sum is 38.

The square root of 252612785 is about 15893.7970604887. The cubic root of 252612785 is about 632.1475255473.

The spelling of 252612785 in words is "two hundred fifty-two million, six hundred twelve thousand, seven hundred eighty-five".