72250012 has 6 divisors (see below), whose sum is σ = 126437528. Its totient is φ = 36125004.

The previous prime is 72250001. The next prime is 72250033. The reversal of 72250012 is 21005227.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 9031248 + ... + 9031255.

Almost surely, 2^72250012 is an apocalyptic number.

It is an amenable number.

72250012 is a deficient number, since it is larger than the sum of its proper divisors (54187516).

72250012 is a wasteful number, since it uses less digits than its factorization.

72250012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18062507 (or 18062505 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 72250012 is about 8500.0007058823. Note that the first 3 decimals coincide. The cubic root of 72250012 is about 416.4977323339.

Adding to 72250012 its reverse (21005227), we get a palindrome (93255239).

The spelling of 72250012 in words is "seventy-two million, two hundred fifty thousand, twelve".