73666725 has 24 divisors (see below), whose sum is σ = 132869472. Its totient is φ = 35716800.

The previous prime is 73666657. The next prime is 73666753. The reversal of 73666725 is 52766637.

It is not a de Polignac number, because 73666725 - 2⁷ = 73666597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43822 + ... + 45471.

It is an arithmetic number, because the mean of its divisors is an integer number (5536228).

Almost surely, 2^73666725 is an apocalyptic number.

73666725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

73666725 is a deficient number, since it is larger than the sum of its proper divisors (59202747).

73666725 is a wasteful number, since it uses less digits than its factorization.

73666725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89317 (or 89312 counting only the distinct ones).

The product of its digits is 317520, while the sum is 42.

The square root of 73666725 is about 8582.9321912736. The cubic root of 73666725 is about 419.2024262875.

The spelling of 73666725 in words is "seventy-three million, six hundred sixty-six thousand, seven hundred twenty-five".