250985279 has 4 divisors (see below), whose sum is σ = 252372120. Its totient is φ = 249598440.

The previous prime is 250985249. The next prime is 250985321. The reversal of 250985279 is 972589052.

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

It is a cyclic number.

It is not a de Polignac number, because 250985279 - 2²⁴ = 234208063 is a prime.

It is a super-2 number, since 2×250985279² = 125987220549415682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250985209) 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, 693149 + ... + 693510.

It is an arithmetic number, because the mean of its divisors is an integer number (63093030).

Almost surely, 2^250985279 is an apocalyptic number.

250985279 is a deficient number, since it is larger than the sum of its proper divisors (1386841).

250985279 is a wasteful number, since it uses less digits than its factorization.

250985279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386840.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 250985279 is about 15842.5149203023. The cubic root of 250985279 is about 630.7870226235.

The spelling of 250985279 in words is "two hundred fifty million, nine hundred eighty-five thousand, two hundred seventy-nine".