225517723142 has 32 divisors (see below), whose sum is σ = 342272401632. Its totient is φ = 111436383744.

The previous prime is 225517723141. The next prime is 225517723187. The reversal of 225517723142 is 241327715522.

It is a self number, because there is not a number n which added to its sum of digits gives 225517723142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225517723141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59454398 + ... + 59458190.

It is an arithmetic number, because the mean of its divisors is an integer number (10696012551).

Almost surely, 2^225517723142 is an apocalyptic number.

225517723142 is a deficient number, since it is larger than the sum of its proper divisors (116754678490).

225517723142 is a wasteful number, since it uses less digits than its factorization.

225517723142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4952.

The product of its digits is 235200, while the sum is 41.

The spelling of 225517723142 in words is "two hundred twenty-five billion, five hundred seventeen million, seven hundred twenty-three thousand, one hundred forty-two".