252918225 has 36 divisors (see below), whose sum is σ = 517722816. Its totient is φ = 115619040.

The previous prime is 252918223. The next prime is 252918247. The reversal of 252918225 is 522819252.

It is not a de Polignac number, because 252918225 - 2¹ = 252918223 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 252918225.

It is not an unprimeable number, because it can be changed into a prime (252918223) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 78717 + ... + 81866.

Almost surely, 2^252918225 is an apocalyptic number.

252918225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

252918225 is an abundant number, since it is smaller than the sum of its proper divisors (264804591).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252918225 is a wasteful number, since it uses less digits than its factorization.

252918225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160606 (or 160598 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 252918225 is about 15903.4029377363. The cubic root of 252918225 is about 632.4022043594.

The spelling of 252918225 in words is "two hundred fifty-two million, nine hundred eighteen thousand, two hundred twenty-five".