252999999 has 12 divisors (see below), whose sum is σ = 417650896. Its totient is φ = 144571392.

The previous prime is 252999893. The next prime is 253000037. The reversal of 252999999 is 999999252.

It is not a de Polignac number, because 252999999 - 2⁸ = 252999743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 4015873 = 252999999 / (2 + 5 + 2 + 9 + 9 + 9 + 9 + 9 + 9).

It is a Duffinian number.

252999999 is a modest number, since divided by 99999 gives 2529 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252959999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2007874 + ... + 2007999.

Almost surely, 2^252999999 is an apocalyptic number.

252999999 is a deficient number, since it is larger than the sum of its proper divisors (164650897).

252999999 is a wasteful number, since it uses less digits than its factorization.

252999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015886 (or 4015883 counting only the distinct ones).

The product of its digits is 10628820, while the sum is 63.

The square root of 252999999 is about 15905.9736891521. The cubic root of 252999999 is about 632.4703535084.

The spelling of 252999999 in words is "two hundred fifty-two million, nine hundred ninety-nine thousand, nine hundred ninety-nine".