72825481 has 8 divisors (see below), whose sum is σ = 74088000. Its totient is φ = 71569680.

The previous prime is 72825469. The next prime is 72825491. The reversal of 72825481 is 18452827.

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

It is a cyclic number.

It is not a de Polignac number, because 72825481 - 2¹⁹ = 72301193 is a prime.

It is a super-2 number, since 2×72825481² = 10607101365762722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72825481.

It is not an unprimeable number, because it can be changed into a prime (72825421) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23310 + ... + 26248.

It is an arithmetic number, because the mean of its divisors is an integer number (9261000).

Almost surely, 2^72825481 is an apocalyptic number.

72825481 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

72825481 is a deficient number, since it is larger than the sum of its proper divisors (1262519).

72825481 is a wasteful number, since it uses less digits than its factorization.

72825481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3359.

The product of its digits is 35840, while the sum is 37.

The square root of 72825481 is about 8533.7846820740. The cubic root of 72825481 is about 417.6006063497.

The spelling of 72825481 in words is "seventy-two million, eight hundred twenty-five thousand, four hundred eighty-one".