72279125 has 24 divisors (see below), whose sum is σ = 92478984. Its totient is φ = 56390400.

The previous prime is 72279113. The next prime is 72279143. The reversal of 72279125 is 52197227.

It can be written as a sum of positive squares in 12 ways, for example, as 66961489 + 5317636 = 8183^2 + 2306^2 .

It is not a de Polignac number, because 72279125 - 2¹⁴ = 72262741 is a prime.

It is a Duffinian number.

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 in 23 ways as a sum of consecutive naturals, for example, 812081 + ... + 812169.

It is an arithmetic number, because the mean of its divisors is an integer number (3853291).

Almost surely, 2^72279125 is an apocalyptic number.

It is an amenable number.

72279125 is a deficient number, since it is larger than the sum of its proper divisors (20199859).

72279125 is an frugal number, since it uses more digits than its factorization.

72279125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 167 counting only the distinct ones).

The product of its digits is 17640, while the sum is 35.

The square root of 72279125 is about 8501.7130626715. The cubic root of 72279125 is about 416.5536671352.

The spelling of 72279125 in words is "seventy-two million, two hundred seventy-nine thousand, one hundred twenty-five".