225707523 has 8 divisors (see below), whose sum is σ = 305435328. Its totient is φ = 148225704.

The previous prime is 225707519. The next prime is 225707539. The reversal of 225707523 is 325707522.

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

It is not a de Polignac number, because 225707523 - 2² = 225707519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225707563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 561261 + ... + 561662.

It is an arithmetic number, because the mean of its divisors is an integer number (38179416).

Almost surely, 2^225707523 is an apocalyptic number.

225707523 is a deficient number, since it is larger than the sum of its proper divisors (79727805).

225707523 is a wasteful number, since it uses less digits than its factorization.

225707523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122993.

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 225707523 is about 15023.5655887675. The cubic root of 225707523 is about 608.8570580797.

Subtracting 225707523 from its reverse (325707522), we obtain a palindrome (99999999).

The spelling of 225707523 in words is "two hundred twenty-five million, seven hundred seven thousand, five hundred twenty-three".