72503250 has 32 divisors (see below), whose sum is σ = 180969984. Its totient is φ = 19334000.

The previous prime is 72503231. The next prime is 72503261. The reversal of 72503250 is 5230527.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72503250.

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 15 ways as a sum of consecutive naturals, for example, 47586 + ... + 49085.

It is an arithmetic number, because the mean of its divisors is an integer number (5655312).

Almost surely, 2^72503250 is an apocalyptic number.

72503250 is an abundant number, since it is smaller than the sum of its proper divisors (108466734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72503250 is a wasteful number, since it uses less digits than its factorization.

72503250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96691 (or 96681 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 72503250 is about 8514.8840273958. The cubic root of 72503250 is about 416.9837763760.

Adding to 72503250 its reverse (5230527), we get a palindrome (77733777).

The spelling of 72503250 in words is "seventy-two million, five hundred three thousand, two hundred fifty".