72525506 has 16 divisors (see below), whose sum is σ = 110833920. Its totient is φ = 35585760.

The previous prime is 72525503. The next prime is 72525521. The reversal of 72525506 is 60552527.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72525503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32870 + ... + 35006.

It is an arithmetic number, because the mean of its divisors is an integer number (6927120).

Almost surely, 2^72525506 is an apocalyptic number.

72525506 is a deficient number, since it is larger than the sum of its proper divisors (38308414).

72525506 is a wasteful number, since it uses less digits than its factorization.

72525506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 72525506 is about 8516.1908151473. The cubic root of 72525506 is about 417.0264385624.

The spelling of 72525506 in words is "seventy-two million, five hundred twenty-five thousand, five hundred six".