72127725 has 12 divisors (see below), whose sum is σ = 119251296. Its totient is φ = 38468080.

The previous prime is 72127721. The next prime is 72127799. The reversal of 72127725 is 52772127.

It is not a de Polignac number, because 72127725 - 2² = 72127721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72127721) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 480777 + ... + 480926.

It is an arithmetic number, because the mean of its divisors is an integer number (9937608).

Almost surely, 2^72127725 is an apocalyptic number.

72127725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72127725 is a deficient number, since it is larger than the sum of its proper divisors (47123571).

72127725 is a wasteful number, since it uses less digits than its factorization.

72127725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961716 (or 961711 counting only the distinct ones).

The product of its digits is 13720, while the sum is 33.

The square root of 72127725 is about 8492.8043071768. The cubic root of 72127725 is about 416.2626180918.

The spelling of 72127725 in words is "seventy-two million, one hundred twenty-seven thousand, seven hundred twenty-five".