225649939 has 8 divisors (see below), whose sum is σ = 237139760. Its totient is φ = 214443936.

The previous prime is 225649927. The next prime is 225649943. The reversal of 225649939 is 939946522.

225649939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225649939 - 2⁷ = 225649811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 225649892 and 225649901.

It is not an unprimeable number, because it can be changed into a prime (225649969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69324 + ... + 72505.

It is an arithmetic number, because the mean of its divisors is an integer number (29642470).

Almost surely, 2^225649939 is an apocalyptic number.

225649939 is a deficient number, since it is larger than the sum of its proper divisors (11489821).

225649939 is a wasteful number, since it uses less digits than its factorization.

225649939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141909.

The product of its digits is 1049760, while the sum is 49.

The square root of 225649939 is about 15021.6490106779. The cubic root of 225649939 is about 608.8052751256.

The spelling of 225649939 in words is "two hundred twenty-five million, six hundred forty-nine thousand, nine hundred thirty-nine".