72752525 has 6 divisors (see below), whose sum is σ = 90213162. Its totient is φ = 58202000.

The previous prime is 72752521. The next prime is 72752527. The reversal of 72752525 is 52525727.

It can be written as a sum of positive squares in 3 ways, for example, as 808201 + 71944324 = 899^2 + 8482^2 .

It is not a de Polignac number, because 72752525 - 2² = 72752521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72752521) 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 5 ways as a sum of consecutive naturals, for example, 1455026 + ... + 1455075.

It is an arithmetic number, because the mean of its divisors is an integer number (15035527).

Almost surely, 2^72752525 is an apocalyptic number.

It is an amenable number.

72752525 is a deficient number, since it is larger than the sum of its proper divisors (17460637).

72752525 is a wasteful number, since it uses less digits than its factorization.

72752525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910111 (or 2910106 counting only the distinct ones).

The product of its digits is 49000, while the sum is 35.

The square root of 72752525 is about 8529.5090714531. The cubic root of 72752525 is about 417.4611100783.

The spelling of 72752525 in words is "seventy-two million, seven hundred fifty-two thousand, five hundred twenty-five".