252780259 has 4 divisors (see below), whose sum is σ = 267649704. Its totient is φ = 237910816.

The previous prime is 252780247. The next prime is 252780271. The reversal of 252780259 is 952087252.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (252780247) and next prime (252780271).

It is a cyclic number.

It is not a de Polignac number, because 252780259 - 2¹⁵ = 252747491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252780299) 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, 7434697 + ... + 7434730.

It is an arithmetic number, because the mean of its divisors is an integer number (66912426).

Almost surely, 2^252780259 is an apocalyptic number.

252780259 is a deficient number, since it is larger than the sum of its proper divisors (14869445).

252780259 is a wasteful number, since it uses less digits than its factorization.

252780259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14869444.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 252780259 is about 15899.0647209199. The cubic root of 252780259 is about 632.2871923864.

The spelling of 252780259 in words is "two hundred fifty-two million, seven hundred eighty thousand, two hundred fifty-nine".