249553265 has 32 divisors (see below), whose sum is σ = 341863200. Its totient is φ = 173537280.

The previous prime is 249553261. The next prime is 249553301. The reversal of 249553265 is 562355942.

It can be written as a sum of positive squares in 16 ways, for example, as 183683809 + 65869456 = 13553^2 + 8116^2 .

It is not a de Polignac number, because 249553265 - 2² = 249553261 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (249553261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75671 + ... + 78899.

It is an arithmetic number, because the mean of its divisors is an integer number (10683225).

Almost surely, 2^249553265 is an apocalyptic number.

It is an amenable number.

249553265 is a deficient number, since it is larger than the sum of its proper divisors (92309935).

249553265 is a wasteful number, since it uses less digits than its factorization.

249553265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317.

The product of its digits is 324000, while the sum is 41.

The square root of 249553265 is about 15797.2549830659. The cubic root of 249553265 is about 629.5850673317.

The spelling of 249553265 in words is "two hundred forty-nine million, five hundred fifty-three thousand, two hundred sixty-five".