225145555 has 16 divisors (see below), whose sum is σ = 284253984. Its totient is φ = 170968320.

The previous prime is 225145541. The next prime is 225145561. The reversal of 225145555 is 555541522.

It is not a de Polignac number, because 225145555 - 2¹¹ = 225143507 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 225145555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7257 + ... + 22426.

It is an arithmetic number, because the mean of its divisors is an integer number (17765874).

Almost surely, 2^225145555 is an apocalyptic number.

225145555 is a deficient number, since it is larger than the sum of its proper divisors (59108429).

225145555 is a wasteful number, since it uses less digits than its factorization.

225145555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29766.

The product of its digits is 50000, while the sum is 34.

The square root of 225145555 is about 15004.8510489108. The cubic root of 225145555 is about 608.3513260874.

The spelling of 225145555 in words is "two hundred twenty-five million, one hundred forty-five thousand, five hundred fifty-five".