75547225 has 18 divisors (see below), whose sum is σ = 101444586. Its totient is φ = 55785600.

The previous prime is 75547193. The next prime is 75547253. The reversal of 75547225 is 52274557.

It can be written as a sum of positive squares in 9 ways, for example, as 52765696 + 22781529 = 7264^2 + 4773^2 .

It is not a de Polignac number, because 75547225 - 2⁵ = 75547193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4716 + ... + 13165.

Almost surely, 2^75547225 is an apocalyptic number.

It is an amenable number.

75547225 is a deficient number, since it is larger than the sum of its proper divisors (25897361).

75547225 is a wasteful number, since it uses less digits than its factorization.

75547225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17917 (or 17899 counting only the distinct ones).

The product of its digits is 98000, while the sum is 37.

The square root of 75547225 is about 8691.7906670605. The cubic root of 75547225 is about 422.7395091705.

The spelling of 75547225 in words is "seventy-five million, five hundred forty-seven thousand, two hundred twenty-five".