225757 has 4 divisors (see below), whose sum is σ = 258016. Its totient is φ = 193500.

The previous prime is 225751. The next prime is 225767. The reversal of 225757 is 757522.

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: 757522 = 2 ⋅378761.

It is a cyclic number.

It is not a de Polignac number, because 225757 - 2³ = 225749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225751) 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, 16119 + ... + 16132.

It is an arithmetic number, because the mean of its divisors is an integer number (64504).

2²²⁵⁷⁵⁷ is an apocalyptic number.

It is an amenable number.

225757 is a deficient number, since it is larger than the sum of its proper divisors (32259).

225757 is an equidigital number, since it uses as much as digits as its factorization.

225757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32258.

The product of its digits is 4900, while the sum is 28.

The square root of 225757 is about 475.1389270519. The cubic root of 225757 is about 60.8901543703.

The spelling of 225757 in words is "two hundred twenty-five thousand, seven hundred fifty-seven".