225155544 has 32 divisors (see below), whose sum is σ = 563961840. Its totient is φ = 74908800.

The previous prime is 225155543. The next prime is 225155549. The reversal of 225155544 is 445551522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225155543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4314 + ... + 21654.

Almost surely, 2^225155544 is an apocalyptic number.

225155544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

225155544 is an abundant number, since it is smaller than the sum of its proper divisors (338806296).

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

225155544 is a wasteful number, since it uses less digits than its factorization.

225155544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17891 (or 17887 counting only the distinct ones).

The product of its digits is 40000, while the sum is 33.

The square root of 225155544 is about 15005.1839042379. The cubic root of 225155544 is about 608.3603228325.

The spelling of 225155544 in words is "two hundred twenty-five million, one hundred fifty-five thousand, five hundred forty-four".