225533979 has 12 divisors (see below), whose sum is σ = 355387032. Its totient is φ = 136687200.

The previous prime is 225533977. The next prime is 225533983. The reversal of 225533979 is 979335522.

225533979 is a `hidden beast` number, since 2 + 2 + 553 + 3 + 97 + 9 = 666.

It is not a de Polignac number, because 225533979 - 2¹ = 225533977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225533977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1138962 + ... + 1139159.

It is an arithmetic number, because the mean of its divisors is an integer number (29615586).

Almost surely, 2^225533979 is an apocalyptic number.

225533979 is a deficient number, since it is larger than the sum of its proper divisors (129853053).

225533979 is a wasteful number, since it uses less digits than its factorization.

225533979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278138 (or 2278135 counting only the distinct ones).

The product of its digits is 510300, while the sum is 45.

The square root of 225533979 is about 15017.7887520101. The cubic root of 225533979 is about 608.7009702651.

The spelling of 225533979 in words is "two hundred twenty-five million, five hundred thirty-three thousand, nine hundred seventy-nine".