72766025 has 6 divisors (see below), whose sum is σ = 90229902. Its totient is φ = 58212800.

The previous prime is 72766009. The next prime is 72766039. The reversal of 72766025 is 52066727.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 18905104 + 53860921 = 4348^2 + 7339^2 .

It is not a de Polignac number, because 72766025 - 2⁴ = 72766009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1455296 + ... + 1455345.

It is an arithmetic number, because the mean of its divisors is an integer number (15038317).

Almost surely, 2^72766025 is an apocalyptic number.

It is an amenable number.

72766025 is a deficient number, since it is larger than the sum of its proper divisors (17463877).

72766025 is a wasteful number, since it uses less digits than its factorization.

72766025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910651 (or 2910646 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 72766025 is about 8530.3004050268. The cubic root of 72766025 is about 417.4869299218.

The spelling of 72766025 in words is "seventy-two million, seven hundred sixty-six thousand, twenty-five".