72500407 has 4 divisors (see below), whose sum is σ = 82857616. Its totient is φ = 62143200.

The previous prime is 72500401. The next prime is 72500429. The reversal of 72500407 is 70400527.

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

It is not a de Polignac number, because 72500407 - 2¹¹ = 72498359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72500401) 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, 5178594 + ... + 5178607.

It is an arithmetic number, because the mean of its divisors is an integer number (20714404).

Almost surely, 2^72500407 is an apocalyptic number.

72500407 is a deficient number, since it is larger than the sum of its proper divisors (10357209).

72500407 is a wasteful number, since it uses less digits than its factorization.

72500407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10357208.

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 72500407 is about 8514.7170827926. The cubic root of 72500407 is about 416.9783260439.

The spelling of 72500407 in words is "seventy-two million, five hundred thousand, four hundred seven".