72250715 has 4 divisors (see below), whose sum is σ = 86700864. Its totient is φ = 57800568.

The previous prime is 72250699. The next prime is 72250721. The reversal of 72250715 is 51705227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72250715 - 2⁴ = 72250699 is a prime.

It is a super-2 number, since 2×72250715² = 10440331636022450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7225067 + ... + 7225076.

It is an arithmetic number, because the mean of its divisors is an integer number (21675216).

Almost surely, 2^72250715 is an apocalyptic number.

72250715 is a deficient number, since it is larger than the sum of its proper divisors (14450149).

72250715 is a wasteful number, since it uses less digits than its factorization.

72250715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14450148.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 72250715 is about 8500.0420587195. The cubic root of 72250715 is about 416.4990831847.

The spelling of 72250715 in words is "seventy-two million, two hundred fifty thousand, seven hundred fifteen".