225899761 has 4 divisors (see below), whose sum is σ = 225947124. Its totient is φ = 225852400.

The previous prime is 225899677. The next prime is 225899801. The reversal of 225899761 is 167998522.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30459361 + 195440400 = 5519^2 + 13980^2 .

It is a cyclic number.

It is not a de Polignac number, because 225899761 - 2¹³ = 225891569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225899561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15610 + ... + 26371.

It is an arithmetic number, because the mean of its divisors is an integer number (56486781).

Almost surely, 2^225899761 is an apocalyptic number.

It is an amenable number.

225899761 is a deficient number, since it is larger than the sum of its proper divisors (47363).

225899761 is an equidigital number, since it uses as much as digits as its factorization.

225899761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47362.

The product of its digits is 544320, while the sum is 49.

The square root of 225899761 is about 15029.9621090673. The cubic root of 225899761 is about 609.0298661568.

The spelling of 225899761 in words is "two hundred twenty-five million, eight hundred ninety-nine thousand, seven hundred sixty-one".