745225 has 12 divisors (see below), whose sum is σ = 995596. Its totient is φ = 550080.

The previous prime is 745201. The next prime is 745231. The reversal of 745225 is 522547.

It can be written as a sum of positive squares in 6 ways, for example, as 138384 + 606841 = 372^2 + 779^2 .

It is not a de Polignac number, because 745225 - 2¹¹ = 743177 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 745225.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822 + ... + 1471.

2⁷⁴⁵²²⁵ is an apocalyptic number.

It is an amenable number.

745225 is a deficient number, since it is larger than the sum of its proper divisors (250371).

745225 is a wasteful number, since it uses less digits than its factorization.

745225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316 (or 2311 counting only the distinct ones).

The product of its digits is 2800, while the sum is 25.

The square root of 745225 is about 863.2641542425. The cubic root of 745225 is about 90.6628023031.

The spelling of 745225 in words is "seven hundred forty-five thousand, two hundred twenty-five".