73725531 has 8 divisors (see below), whose sum is σ = 107237184. Its totient is φ = 44682120.

The previous prime is 73725517. The next prime is 73725551. The reversal of 73725531 is 13552737.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73725531 - 2⁶ = 73725467 is a prime.

It is a super-2 number, since 2×73725531² = 10870907842463922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2234107 = 73725531 / (7 + 3 + 7 + 2 + 5 + 5 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 73725492 and 73725501.

It is not an unprimeable number, because it can be changed into a prime (73725551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1117021 + ... + 1117086.

It is an arithmetic number, because the mean of its divisors is an integer number (13404648).

Almost surely, 2^73725531 is an apocalyptic number.

73725531 is a deficient number, since it is larger than the sum of its proper divisors (33511653).

73725531 is a wasteful number, since it uses less digits than its factorization.

73725531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234121.

The product of its digits is 22050, while the sum is 33.

The square root of 73725531 is about 8586.3572602123. The cubic root of 73725531 is about 419.3139423133.

The spelling of 73725531 in words is "seventy-three million, seven hundred twenty-five thousand, five hundred thirty-one".