72802225 has 12 divisors (see below), whose sum is σ = 92375536. Its totient is φ = 56886480.

The previous prime is 72802217. The next prime is 72802237. The reversal of 72802225 is 52220827.

It is not a de Polignac number, because 72802225 - 2³ = 72802217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72802193 and 72802202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32787 + ... + 34936.

Almost surely, 2^72802225 is an apocalyptic number.

It is an amenable number.

72802225 is a deficient number, since it is larger than the sum of its proper divisors (19573311).

72802225 is a wasteful number, since it uses less digits than its factorization.

72802225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67776 (or 67771 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 72802225 is about 8532.4219890955. The cubic root of 72802225 is about 417.5561495949.

The spelling of 72802225 in words is "seventy-two million, eight hundred two thousand, two hundred twenty-five".