225020643 has 32 divisors (see below), whose sum is σ = 316646400. Its totient is φ = 141989760.

The previous prime is 225020623. The next prime is 225020647. The reversal of 225020643 is 346020522.

It is not a de Polignac number, because 225020643 - 2¹⁴ = 225004259 is a prime.

It is a super-2 number, since 2×225020643² = 101268579552266898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (225020647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1130658 + ... + 1130856.

It is an arithmetic number, because the mean of its divisors is an integer number (9895200).

Almost surely, 2^225020643 is an apocalyptic number.

225020643 is a deficient number, since it is larger than the sum of its proper divisors (91625757).

225020643 is a wasteful number, since it uses less digits than its factorization.

225020643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 225020643 is about 15000.6880842180. The cubic root of 225020643 is about 608.2387997138.

The spelling of 225020643 in words is "two hundred twenty-five million, twenty thousand, six hundred forty-three".