72732425 has 12 divisors (see below), whose sum is σ = 90364380. Its totient is φ = 58072320.

The previous prime is 72732403. The next prime is 72732433. The reversal of 72732425 is 52423727.

It can be written as a sum of positive squares in 6 ways, for example, as 27962944 + 44769481 = 5288^2 + 6691^2 .

It is not a de Polignac number, because 72732425 - 2²² = 68538121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72732391 and 72732400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11669 + ... + 16781.

It is an arithmetic number, because the mean of its divisors is an integer number (7530365).

Almost surely, 2^72732425 is an apocalyptic number.

It is an amenable number.

72732425 is a deficient number, since it is larger than the sum of its proper divisors (17631955).

72732425 is a wasteful number, since it uses less digits than its factorization.

72732425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5692 (or 5687 counting only the distinct ones).

The product of its digits is 23520, while the sum is 32.

The square root of 72732425 is about 8528.3307276395. The cubic root of 72732425 is about 417.4226612813.

The spelling of 72732425 in words is "seventy-two million, seven hundred thirty-two thousand, four hundred twenty-five".