225570345 has 128 divisors (see below), whose sum is σ = 493129728. Its totient is φ = 85017600.

The previous prime is 225570283. The next prime is 225570347. The reversal of 225570345 is 543075522.

It is not a de Polignac number, because 225570345 - 2⁹ = 225569833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (225570347) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1246155 + ... + 1246335.

It is an arithmetic number, because the mean of its divisors is an integer number (3852576).

Almost surely, 2^225570345 is an apocalyptic number.

It is an amenable number.

225570345 is an abundant number, since it is smaller than the sum of its proper divisors (267559383).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225570345 is a wasteful number, since it uses less digits than its factorization.

225570345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303.

The product of its (nonzero) digits is 42000, while the sum is 33.

The square root of 225570345 is about 15018.9994673414. Note that the first 3 decimals coincide. The cubic root of 225570345 is about 608.7336849657.

The spelling of 225570345 in words is "two hundred twenty-five million, five hundred seventy thousand, three hundred forty-five".