72734725 has 12 divisors (see below), whose sum is σ = 103075744. Its totient is φ = 49875120.

The previous prime is 72734707. The next prime is 72734729. The reversal of 72734725 is 52743727.

It is not a de Polignac number, because 72734725 - 2⁵ = 72734693 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72734729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 207639 + ... + 207988.

Almost surely, 2^72734725 is an apocalyptic number.

It is an amenable number.

72734725 is a deficient number, since it is larger than the sum of its proper divisors (30341019).

72734725 is a wasteful number, since it uses less digits than its factorization.

72734725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415644 (or 415639 counting only the distinct ones).

The product of its digits is 82320, while the sum is 37.

The square root of 72734725 is about 8528.4655712502. The cubic root of 72734725 is about 417.4270612538.

The spelling of 72734725 in words is "seventy-two million, seven hundred thirty-four thousand, seven hundred twenty-five".