225495640 has 32 divisors (see below), whose sum is σ = 515970000. Its totient is φ = 88668544.

The previous prime is 225495637. The next prime is 225495659. The reversal of 225495640 is 46594522.

225495640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 225495640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45415 + ... + 50134.

Almost surely, 2^225495640 is an apocalyptic number.

225495640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225495640 is an abundant number, since it is smaller than the sum of its proper divisors (290474360).

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

225495640 is a wasteful number, since it uses less digits than its factorization.

225495640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95619 (or 95615 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 225495640 is about 15016.5122448590. The cubic root of 225495640 is about 608.6664768536. Note that the first 3 decimals are identical.

The spelling of 225495640 in words is "two hundred twenty-five million, four hundred ninety-five thousand, six hundred forty".