75415225 has 12 divisors (see below), whose sum is σ = 96740460. Its totient is φ = 58251200.

The previous prime is 75415201. The next prime is 75415231. The reversal of 75415225 is 52251457.

It can be written as a sum of positive squares in 6 ways, for example, as 20736 + 75394489 = 144^2 + 8683^2 .

It is a de Polignac number, because none of the positive numbers 2^k-75415225 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51286 + ... + 52735.

It is an arithmetic number, because the mean of its divisors is an integer number (8061705).

Almost surely, 2^75415225 is an apocalyptic number.

It is an amenable number.

75415225 is a deficient number, since it is larger than the sum of its proper divisors (21325235).

75415225 is a wasteful number, since it uses less digits than its factorization.

75415225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104060 (or 104055 counting only the distinct ones).

The product of its digits is 14000, while the sum is 31.

The square root of 75415225 is about 8684.1939752633. The cubic root of 75415225 is about 422.4931548907.

Adding to 75415225 its product of digits (14000), we get a square (75429225 = 8685²).

The spelling of 75415225 in words is "seventy-five million, four hundred fifteen thousand, two hundred twenty-five".