38772225 has 18 divisors (see below), whose sum is σ = 69445766. Its totient is φ = 20678400.

The previous prime is 38772193. The next prime is 38772247. The reversal of 38772225 is 52227783.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5143824 + 33628401 = 2268^2 + 5799^2 .

It is not a de Polignac number, because 38772225 - 2⁵ = 38772193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38772225.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 85936 + ... + 86385.

Almost surely, 2^38772225 is an apocalyptic number.

It is an amenable number.

38772225 is a deficient number, since it is larger than the sum of its proper divisors (30673541).

38772225 is a wasteful number, since it uses less digits than its factorization.

38772225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172337 (or 172329 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 38772225 is about 6226.7346980580. The cubic root of 38772225 is about 338.4596555376.

The spelling of 38772225 in words is "thirty-eight million, seven hundred seventy-two thousand, two hundred twenty-five".