225405481 has 8 divisors (see below), whose sum is σ = 257801600. Its totient is φ = 193058208.

The previous prime is 225405473. The next prime is 225405491. The reversal of 225405481 is 184504522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 225405481 - 2³ = 225405473 is a prime.

It is a super-2 number, since 2×225405481² = 101615261729682722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225405421) 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, 1716 + ... + 21301.

It is an arithmetic number, because the mean of its divisors is an integer number (32225200).

Almost surely, 2^225405481 is an apocalyptic number.

It is an amenable number.

225405481 is a deficient number, since it is larger than the sum of its proper divisors (32396119).

225405481 is a wasteful number, since it uses less digits than its factorization.

225405481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24423.

The product of its (nonzero) digits is 12800, while the sum is 31.

The square root of 225405481 is about 15013.5099493756. The cubic root of 225405481 is about 608.5853458301.

The spelling of 225405481 in words is "two hundred twenty-five million, four hundred five thousand, four hundred eighty-one".