72225611332 has 18 divisors (see below), whose sum is σ = 147030709182. Its totient is φ = 30953833344.

The previous prime is 72225611321. The next prime is 72225611351. The reversal of 72225611332 is 23311652227.

It can be written as a sum of positive squares in only one way, i.e., 66711657796 + 5513953536 = 258286^2 + 74256^2 .

It is a super-2 number, since 2×72225611332² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184248813 + ... + 184249204.

Almost surely, 2^72225611332 is an apocalyptic number.

It is an amenable number.

72225611332 is an abundant number, since it is smaller than the sum of its proper divisors (74805097850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72225611332 is a wasteful number, since it uses less digits than its factorization.

72225611332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368498035 (or 368498026 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The spelling of 72225611332 in words is "seventy-two billion, two hundred twenty-five million, six hundred eleven thousand, three hundred thirty-two".