225321222523 has 8 divisors (see below), whose sum is σ = 232597370880. Its totient is φ = 218045556840.

The previous prime is 225321222499. The next prime is 225321222551. The reversal of 225321222523 is 325222123522.

It is a happy number.

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

It is not a de Polignac number, because 225321222523 - 2⁵ = 225321222491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225321222023) 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, 990636 + ... + 1196662.

It is an arithmetic number, because the mean of its divisors is an integer number (29074671360).

Almost surely, 2^225321222523 is an apocalyptic number.

225321222523 is a deficient number, since it is larger than the sum of its proper divisors (7276148357).

225321222523 is a wasteful number, since it uses less digits than its factorization.

225321222523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241337.

The product of its digits is 28800, while the sum is 31.

Subtracting 225321222523 from its reverse (325222123522), we obtain a palindrome (99900900999).

The spelling of 225321222523 in words is "two hundred twenty-five billion, three hundred twenty-one million, two hundred twenty-two thousand, five hundred twenty-three".