225992540 has 24 divisors (see below), whose sum is σ = 479481072. Its totient is φ = 89464320.

The previous prime is 225992531. The next prime is 225992561. The reversal of 225992540 is 45299522.

225992540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 225992494 and 225992503.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56306 + ... + 60185.

It is an arithmetic number, because the mean of its divisors is an integer number (19978378).

Almost surely, 2^225992540 is an apocalyptic number.

225992540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225992540 is an abundant number, since it is smaller than the sum of its proper divisors (253488532).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225992540 is a wasteful number, since it uses less digits than its factorization.

225992540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116597 (or 116595 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 225992540 is about 15033.0482604161. The cubic root of 225992540 is about 609.1132327021.

The spelling of 225992540 in words is "two hundred twenty-five million, nine hundred ninety-two thousand, five hundred forty".