225633761 has 4 divisors (see below), whose sum is σ = 225792000. Its totient is φ = 225475524.

The previous prime is 225633743. The next prime is 225633827. The reversal of 225633761 is 167336522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 167336522 = 2 ⋅83668261.

It is a cyclic number.

It is not a de Polignac number, because 225633761 - 2¹⁸ = 225371617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225638761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76961 + ... + 79838.

It is an arithmetic number, because the mean of its divisors is an integer number (56448000).

Almost surely, 2^225633761 is an apocalyptic number.

It is an amenable number.

225633761 is a deficient number, since it is larger than the sum of its proper divisors (158239).

225633761 is a wasteful number, since it uses less digits than its factorization.

225633761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158238.

The product of its digits is 45360, while the sum is 35.

The square root of 225633761 is about 15021.1105115434. The cubic root of 225633761 is about 608.7907253217.

The spelling of 225633761 in words is "two hundred twenty-five million, six hundred thirty-three thousand, seven hundred sixty-one".