72125170 has 32 divisors (see below), whose sum is σ = 140216832. Its totient is φ = 26553792.

The previous prime is 72125167. The next prime is 72125177. The reversal of 72125170 is 7152127.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72125177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64839 + ... + 65941.

It is an arithmetic number, because the mean of its divisors is an integer number (4381776).

Almost surely, 2^72125170 is an apocalyptic number.

72125170 is a deficient number, since it is larger than the sum of its proper divisors (68091662).

72125170 is a wasteful number, since it uses less digits than its factorization.

72125170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626.

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 72125170 is about 8492.6538843874. The cubic root of 72125170 is about 416.2577029058.

Adding to 72125170 its reverse (7152127), we get a palindrome (79277297).

The spelling of 72125170 in words is "seventy-two million, one hundred twenty-five thousand, one hundred seventy".