225787849 has 32 divisors (see below), whose sum is σ = 292700160. Its totient is φ = 169646400.

The previous prime is 225787777. The next prime is 225787873. The reversal of 225787849 is 948787522.

It is a happy number.

It is not a de Polignac number, because 225787849 - 2⁷ = 225787721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225787796 and 225787805.

It is not an unprimeable number, because it can be changed into a prime (225787879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93639 + ... + 96019.

It is an arithmetic number, because the mean of its divisors is an integer number (9146880).

Almost surely, 2^225787849 is an apocalyptic number.

It is an amenable number.

225787849 is a deficient number, since it is larger than the sum of its proper divisors (66912311).

225787849 is a wasteful number, since it uses less digits than its factorization.

225787849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461.

The product of its digits is 2257920, while the sum is 52.

The square root of 225787849 is about 15026.2386843814. The cubic root of 225787849 is about 608.9292772814.

The spelling of 225787849 in words is "two hundred twenty-five million, seven hundred eighty-seven thousand, eight hundred forty-nine".