75161225 has 18 divisors (see below), whose sum is σ = 95295054. Its totient is φ = 58806400.

The previous prime is 75161209. The next prime is 75161227. The reversal of 75161225 is 52216157.

It can be written as a sum of positive squares in 3 ways, for example, as 373321 + 74787904 = 611^2 + 8648^2 .

It is not a de Polignac number, because 75161225 - 2⁴ = 75161209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75161227) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 54545 + ... + 55905.

Almost surely, 2^75161225 is an apocalyptic number.

It is an amenable number.

75161225 is a deficient number, since it is larger than the sum of its proper divisors (20133829).

75161225 is a wasteful number, since it uses less digits than its factorization.

75161225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465 (or 1413 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 75161225 is about 8669.5573704775. The cubic root of 75161225 is about 422.0182995591.

The spelling of 75161225 in words is "seventy-five million, one hundred sixty-one thousand, two hundred twenty-five".