73656725 has 12 divisors (see below), whose sum is σ = 91635876. Its totient is φ = 58730880.

The previous prime is 73656691. The next prime is 73656731. The reversal of 73656725 is 52765637.

It can be written as a sum of positive squares in 6 ways, for example, as 1100401 + 72556324 = 1049^2 + 8518^2 .

It is not a de Polignac number, because 73656725 - 2²⁰ = 72608149 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3119 + ... + 12531.

It is an arithmetic number, because the mean of its divisors is an integer number (7636323).

Almost surely, 2^73656725 is an apocalyptic number.

It is an amenable number.

73656725 is a deficient number, since it is larger than the sum of its proper divisors (17979151).

73656725 is a wasteful number, since it uses less digits than its factorization.

73656725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9736 (or 9731 counting only the distinct ones).

The product of its digits is 264600, while the sum is 41.

The square root of 73656725 is about 8582.3496200050. The cubic root of 73656725 is about 419.1834570086.

The spelling of 73656725 in words is "seventy-three million, six hundred fifty-six thousand, seven hundred twenty-five".