72525812 has 12 divisors (see below), whose sum is σ = 133600320. Its totient is φ = 34354296.

The previous prime is 72525811. The next prime is 72525823. The reversal of 72525812 is 21852527.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72525811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477068 + ... + 477219.

It is an arithmetic number, because the mean of its divisors is an integer number (11133360).

Almost surely, 2^72525812 is an apocalyptic number.

It is an amenable number.

72525812 is a deficient number, since it is larger than the sum of its proper divisors (61074508).

72525812 is a wasteful number, since it uses less digits than its factorization.

72525812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954310 (or 954308 counting only the distinct ones).

The product of its digits is 11200, while the sum is 32.

The square root of 72525812 is about 8516.2087809071. The cubic root of 72525812 is about 417.0270250683.

It can be divided in two parts, 72525 and 812, that added together give a palindrome (73337).

The spelling of 72525812 in words is "seventy-two million, five hundred twenty-five thousand, eight hundred twelve".