72725115 has 16 divisors (see below), whose sum is σ = 118269216. Its totient is φ = 38150400.

The previous prime is 72725077. The next prime is 72725117. The reversal of 72725115 is 51152727.

It is not a de Polignac number, because 72725115 - 2¹⁴ = 72708731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72725117) 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, 38826 + ... + 40655.

It is an arithmetic number, because the mean of its divisors is an integer number (7391826).

Almost surely, 2^72725115 is an apocalyptic number.

72725115 is a deficient number, since it is larger than the sum of its proper divisors (45544101).

72725115 is a wasteful number, since it uses less digits than its factorization.

72725115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79550.

The product of its digits is 4900, while the sum is 30.

The square root of 72725115 is about 8527.9021453110. The cubic root of 72725115 is about 417.4086764051.

The spelling of 72725115 in words is "seventy-two million, seven hundred twenty-five thousand, one hundred fifteen".