225377999 has 24 divisors (see below), whose sum is σ = 287780688. Its totient is φ = 174531840.

The previous prime is 225377987. The next prime is 225378001. The reversal of 225377999 is 999773522.

It is a happy number.

It is not a de Polignac number, because 225377999 - 2⁴ = 225377983 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225377999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225377939) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92039 + ... + 94455.

It is an arithmetic number, because the mean of its divisors is an integer number (11990862).

Almost surely, 2^225377999 is an apocalyptic number.

225377999 is a deficient number, since it is larger than the sum of its proper divisors (62402689).

225377999 is a wasteful number, since it uses less digits than its factorization.

225377999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2615 (or 2608 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 53.

The square root of 225377999 is about 15012.5946791352. The cubic root of 225377999 is about 608.5606114090.

The spelling of 225377999 in words is "two hundred twenty-five million, three hundred seventy-seven thousand, nine hundred ninety-nine".