249025289 has 4 divisors (see below), whose sum is σ = 249617220. Its totient is φ = 248433360.

The previous prime is 249025279. The next prime is 249025303. The reversal of 249025289 is 982520942.

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 50694400 + 198330889 = 7120^2 + 14083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-249025289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249025279) 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, 295334 + ... + 296175.

It is an arithmetic number, because the mean of its divisors is an integer number (62404305).

Almost surely, 2^249025289 is an apocalyptic number.

It is an amenable number.

249025289 is a deficient number, since it is larger than the sum of its proper divisors (591931).

249025289 is an equidigital number, since it uses as much as digits as its factorization.

249025289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591930.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 249025289 is about 15780.5351303433. The cubic root of 249025289 is about 629.1407526969.

The spelling of 249025289 in words is "two hundred forty-nine million, twenty-five thousand, two hundred eighty-nine".