225999538 has 8 divisors (see below), whose sum is σ = 343083888. Its totient is φ = 111638244.

The previous prime is 225999469. The next prime is 225999539. The reversal of 225999538 is 835999522.

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

It is not an unprimeable number, because it can be changed into a prime (225999539) 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, 680556 + ... + 680887.

It is an arithmetic number, because the mean of its divisors is an integer number (42885486).

Almost surely, 2^225999538 is an apocalyptic number.

225999538 is a deficient number, since it is larger than the sum of its proper divisors (117084350).

225999538 is a wasteful number, since it uses less digits than its factorization.

225999538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361528.

The product of its digits is 1749600, while the sum is 52.

The square root of 225999538 is about 15033.2810124736. The cubic root of 225999538 is about 609.1195198277.

The spelling of 225999538 in words is "two hundred twenty-five million, nine hundred ninety-nine thousand, five hundred thirty-eight".