73145825 has 12 divisors (see below), whose sum is σ = 91796208. Its totient is φ = 57810000.

The previous prime is 73145789. The next prime is 73145827. The reversal of 73145825 is 52854137.

It is a happy number.

It is not a de Polignac number, because 73145825 - 2²² = 68951521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73145827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15551 + ... + 19700.

It is an arithmetic number, because the mean of its divisors is an integer number (7649684).

Almost surely, 2^73145825 is an apocalyptic number.

It is an amenable number.

73145825 is a deficient number, since it is larger than the sum of its proper divisors (18650383).

73145825 is a wasteful number, since it uses less digits than its factorization.

73145825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35344 (or 35339 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 73145825 is about 8552.5332504469. The cubic root of 73145825 is about 418.2120231877.

The spelling of 73145825 in words is "seventy-three million, one hundred forty-five thousand, eight hundred twenty-five".