225405555 has 32 divisors (see below), whose sum is σ = 369126720. Its totient is φ = 117411840.

The previous prime is 225405541. The next prime is 225405559. The reversal of 225405555 is 555504522.

It is not a de Polignac number, because 225405555 - 2⁶ = 225405491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225405559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222891 + ... + 223899.

It is an arithmetic number, because the mean of its divisors is an integer number (11535210).

Almost surely, 2^225405555 is an apocalyptic number.

225405555 is a deficient number, since it is larger than the sum of its proper divisors (143721165).

225405555 is a wasteful number, since it uses less digits than its factorization.

225405555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351.

The product of its (nonzero) digits is 50000, while the sum is 33.

The square root of 225405555 is about 15013.5124138224. The cubic root of 225405555 is about 608.5854124290.

The spelling of 225405555 in words is "two hundred twenty-five million, four hundred five thousand, five hundred fifty-five".