22799225 has 6 divisors (see below), whose sum is σ = 28271070. Its totient is φ = 18239360.

The previous prime is 22799213. The next prime is 22799237. The reversal of 22799225 is 52299722.

It is an interprime number because it is at equal distance from previous prime (22799213) and next prime (22799237).

It can be written as a sum of positive squares in 3 ways, for example, as 2621161 + 20178064 = 1619^2 + 4492^2 .

It is not a de Polignac number, because 22799225 - 2⁸ = 22798969 is a prime.

It is a Curzon number.

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, 455960 + ... + 456009.

It is an arithmetic number, because the mean of its divisors is an integer number (4711845).

Almost surely, 2^22799225 is an apocalyptic number.

22799225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22799225 is a deficient number, since it is larger than the sum of its proper divisors (5471845).

22799225 is an equidigital number, since it uses as much as digits as its factorization.

22799225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911979 (or 911974 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 22799225 is about 4774.8534008910. The cubic root of 22799225 is about 283.5567749164.

The spelling of 22799225 in words is "twenty-two million, seven hundred ninety-nine thousand, two hundred twenty-five".