72325636 has 6 divisors (see below), whose sum is σ = 126569870. Its totient is φ = 36162816.

The previous prime is 72325607. The next prime is 72325637. The reversal of 72325636 is 63652327.

It can be written as a sum of positive squares in only one way, i.e., 63361600 + 8964036 = 7960^2 + 2994^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72325637) 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 as a sum of consecutive naturals, namely, 9040701 + ... + 9040708.

Almost surely, 2^72325636 is an apocalyptic number.

It is an amenable number.

72325636 is a deficient number, since it is larger than the sum of its proper divisors (54244234).

72325636 is a wasteful number, since it uses less digits than its factorization.

72325636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18081413 (or 18081411 counting only the distinct ones).

The product of its digits is 45360, while the sum is 34.

The square root of 72325636 is about 8504.4480126578. The cubic root of 72325636 is about 416.6429975533.

The spelling of 72325636 in words is "seventy-two million, three hundred twenty-five thousand, six hundred thirty-six".