72500003 has 4 divisors (see below), whose sum is σ = 72651840. Its totient is φ = 72348168.

The previous prime is 72499997. The next prime is 72500027. The reversal of 72500003 is 30000527.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30000527 = 1951 ⋅15377.

It is a cyclic number.

It is not a de Polignac number, because 72500003 - 2²⁰ = 71451427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72500033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75200 + ... + 76157.

It is an arithmetic number, because the mean of its divisors is an integer number (18162960).

Almost surely, 2^72500003 is an apocalyptic number.

72500003 is a deficient number, since it is larger than the sum of its proper divisors (151837).

72500003 is a wasteful number, since it uses less digits than its factorization.

72500003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151836.

The product of its (nonzero) digits is 210, while the sum is 17.

The square root of 72500003 is about 8514.6933591293. The cubic root of 72500003 is about 416.9775515215.

The spelling of 72500003 in words is "seventy-two million, five hundred thousand, three".