222724325 has 12 divisors (see below), whose sum is σ = 278198340. Its totient is φ = 176876160.

The previous prime is 222724309. The next prime is 222724357. The reversal of 222724325 is 523427222.

It can be written as a sum of positive squares in 6 ways, for example, as 17833729 + 204890596 = 4223^2 + 14314^2 .

It is not a de Polignac number, because 222724325 - 2⁴ = 222724309 is a prime.

It is a super-2 number, since 2×222724325² = 99212249893411250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 29090 + ... + 35939.

It is an arithmetic number, because the mean of its divisors is an integer number (23183195).

Almost surely, 2^222724325 is an apocalyptic number.

222724325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222724325 is a deficient number, since it is larger than the sum of its proper divisors (55474015).

222724325 is a wasteful number, since it uses less digits than its factorization.

222724325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65176 (or 65171 counting only the distinct ones).

The product of its digits is 13440, while the sum is 29.

The square root of 222724325 is about 14923.9513869484. The cubic root of 222724325 is about 606.1627117747.

The spelling of 222724325 in words is "two hundred twenty-two million, seven hundred twenty-four thousand, three hundred twenty-five".