225891545 has 16 divisors (see below), whose sum is σ = 296315712. Its totient is φ = 163949760.

The previous prime is 225891539. The next prime is 225891569. The reversal of 225891545 is 545198522.

It is not a de Polignac number, because 225891545 - 2⁶ = 225891481 is a prime.

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, 24839 + ... + 32691.

It is an arithmetic number, because the mean of its divisors is an integer number (18519732).

Almost surely, 2^225891545 is an apocalyptic number.

It is an amenable number.

225891545 is a deficient number, since it is larger than the sum of its proper divisors (70424167).

225891545 is a wasteful number, since it uses less digits than its factorization.

225891545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8392.

The product of its digits is 144000, while the sum is 41.

The square root of 225891545 is about 15029.6887858665. The cubic root of 225891545 is about 609.0224825721.

The spelling of 225891545 in words is "two hundred twenty-five million, eight hundred ninety-one thousand, five hundred forty-five".