225520029 has 12 divisors (see below), whose sum is σ = 372287136. Its totient is φ = 128868552.

The previous prime is 225519953. The next prime is 225520039. The reversal of 225520029 is 920025522.

It is not a de Polignac number, because 225520029 - 2²¹ = 223422877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225519984 and 225520011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225520039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1789779 + ... + 1789904.

It is an arithmetic number, because the mean of its divisors is an integer number (31023928).

Almost surely, 2^225520029 is an apocalyptic number.

It is an amenable number.

225520029 is a deficient number, since it is larger than the sum of its proper divisors (146767107).

225520029 is a wasteful number, since it uses less digits than its factorization.

225520029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579696 (or 3579693 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 225520029 is about 15017.3242956260. The cubic root of 225520029 is about 608.6884199705.

The spelling of 225520029 in words is "two hundred twenty-five million, five hundred twenty thousand, twenty-nine".