22776225 has 12 divisors (see below), whose sum is σ = 37656816. Its totient is φ = 12147280.

The previous prime is 22776217. The next prime is 22776239. The reversal of 22776225 is 52267722.

It is not a de Polignac number, because 22776225 - 2³ = 22776217 is a prime.

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, 151767 + ... + 151916.

It is an arithmetic number, because the mean of its divisors is an integer number (3138068).

Almost surely, 2^22776225 is an apocalyptic number.

22776225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22776225 is a deficient number, since it is larger than the sum of its proper divisors (14880591).

22776225 is a wasteful number, since it uses less digits than its factorization.

22776225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303696 (or 303691 counting only the distinct ones).

The product of its digits is 23520, while the sum is 33.

The square root of 22776225 is about 4772.4443422632. Note that the first 3 decimals coincide. The cubic root of 22776225 is about 283.4613915553.

The spelling of 22776225 in words is "twenty-two million, seven hundred seventy-six thousand, two hundred twenty-five".