226991725 has 6 divisors (see below), whose sum is σ = 281469770. Its totient is φ = 181593360.

The previous prime is 226991719. The next prime is 226991731. The reversal of 226991725 is 527199622.

It is an interprime number because it is at equal distance from previous prime (226991719) and next prime (226991731).

It can be written as a sum of positive squares in 3 ways, for example, as 5517801 + 221473924 = 2349^2 + 14882^2 .

It is not a de Polignac number, because 226991725 - 2⁵ = 226991693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4539810 + ... + 4539859.

Almost surely, 2^226991725 is an apocalyptic number.

226991725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

226991725 is a deficient number, since it is larger than the sum of its proper divisors (54478045).

226991725 is an equidigital number, since it uses as much as digits as its factorization.

226991725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9079679 (or 9079674 counting only the distinct ones).

The product of its digits is 136080, while the sum is 43.

The square root of 226991725 is about 15066.2445552965. The cubic root of 226991725 is about 610.0096074810.

The spelling of 226991725 in words is "two hundred twenty-six million, nine hundred ninety-one thousand, seven hundred twenty-five".