225143385 has 16 divisors (see below), whose sum is σ = 372651840. Its totient is φ = 115935680.

The previous prime is 225143357. The next prime is 225143419. The reversal of 225143385 is 583341522.

It is not a de Polignac number, because 225143385 - 2⁸ = 225143129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258351 + ... + 259220.

It is an arithmetic number, because the mean of its divisors is an integer number (23290740).

Almost surely, 2^225143385 is an apocalyptic number.

It is an amenable number.

225143385 is a deficient number, since it is larger than the sum of its proper divisors (147508455).

225143385 is a wasteful number, since it uses less digits than its factorization.

225143385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517608.

The product of its digits is 28800, while the sum is 33.

The square root of 225143385 is about 15004.7787387885. The cubic root of 225143385 is about 608.3493716086.

The spelling of 225143385 in words is "two hundred twenty-five million, one hundred forty-three thousand, three hundred eighty-five".