225811542 has 32 divisors (see below), whose sum is σ = 518613120. Its totient is φ = 64825920.

The previous prime is 225811541. The next prime is 225811571. The reversal of 225811542 is 245118522.

225811542 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225811541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88783 + ... + 91290.

It is an arithmetic number, because the mean of its divisors is an integer number (16206660).

Almost surely, 2^225811542 is an apocalyptic number.

225811542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225811542 is an abundant number, since it is smaller than the sum of its proper divisors (292801578).

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

225811542 is a wasteful number, since it uses less digits than its factorization.

225811542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180108.

The product of its digits is 6400, while the sum is 30.

The square root of 225811542 is about 15027.0270512833. The cubic root of 225811542 is about 608.9505758246.

The spelling of 225811542 in words is "two hundred twenty-five million, eight hundred eleven thousand, five hundred forty-two".