225443537 has 8 divisors (see below), whose sum is σ = 251171712. Its totient is φ = 200587600.

The previous prime is 225443527. The next prime is 225443549. The reversal of 225443537 is 735344522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225443537 - 2¹⁶ = 225378001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 225443497 and 225443506.

It is not an unprimeable number, because it can be changed into a prime (225443527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217514 + ... + 218547.

It is an arithmetic number, because the mean of its divisors is an integer number (31396464).

Almost surely, 2^225443537 is an apocalyptic number.

It is an amenable number.

225443537 is a deficient number, since it is larger than the sum of its proper divisors (25728175).

225443537 is a wasteful number, since it uses less digits than its factorization.

225443537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436119.

The product of its digits is 100800, while the sum is 35.

The square root of 225443537 is about 15014.7772877256. Note that the first 3 decimals coincide. The cubic root of 225443537 is about 608.6195937708.

The spelling of 225443537 in words is "two hundred twenty-five million, four hundred forty-three thousand, five hundred thirty-seven".