73613825 has 12 divisors (see below), whose sum is σ = 96651180. Its totient is φ = 55426560.

The previous prime is 73613821. The next prime is 73613833. The reversal of 73613825 is 52831637.

It can be written as a sum of positive squares in 6 ways, for example, as 7011904 + 66601921 = 2648^2 + 8161^2 .

It is not a de Polignac number, because 73613825 - 2² = 73613821 is a prime.

It is a super-2 number, since 2×73613825² = 10837990462261250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (73613821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86180 + ... + 87029.

It is an arithmetic number, because the mean of its divisors is an integer number (8054265).

Almost surely, 2^73613825 is an apocalyptic number.

It is an amenable number.

73613825 is a deficient number, since it is larger than the sum of its proper divisors (23037355).

73613825 is a wasteful number, since it uses less digits than its factorization.

73613825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173236 (or 173231 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 73613825 is about 8579.8499404127. The cubic root of 73613825 is about 419.1020593144.

The spelling of 73613825 in words is "seventy-three million, six hundred thirteen thousand, eight hundred twenty-five".