73776725 has 36 divisors (see below), whose sum is σ = 104146980. Its totient is φ = 51805600.

The previous prime is 73776679. The next prime is 73776743. The reversal of 73776725 is 52767737.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 6 ways, for example, as 16834609 + 56942116 = 4103^2 + 7546^2 .

It is a de Polignac number, because none of the positive numbers 2^k-73776725 is a prime.

Its product of digits (432180) is a multiple of the sum of its prime divisors (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2544011 + ... + 2544039.

Almost surely, 2^73776725 is an apocalyptic number.

It is an amenable number.

73776725 is a deficient number, since it is larger than the sum of its proper divisors (30370255).

73776725 is an equidigital number, since it uses as much as digits as its factorization.

73776725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119 (or 45 counting only the distinct ones).

The product of its digits is 432180, while the sum is 44.

The square root of 73776725 is about 8589.3378673795. The cubic root of 73776725 is about 419.4109751455.

The spelling of 73776725 in words is "seventy-three million, seven hundred seventy-six thousand, seven hundred twenty-five".