25223142555166 has 16 divisors (see below), whose sum is σ = 38442975619680. Its totient is φ = 12409515297760.

The previous prime is 25223142555161. The next prime is 25223142555181. The reversal of 25223142555166 is 66155524132252.

It is a super-2 number, since 2×25223142555166² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25223142555161) 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, 174414721 + ... + 174559276.

It is an arithmetic number, because the mean of its divisors is an integer number (2402685976230).

Almost surely, 2^{25223142555166} is an apocalyptic number.

25223142555166 is a deficient number, since it is larger than the sum of its proper divisors (13219833064514).

25223142555166 is a wasteful number, since it uses less digits than its factorization.

25223142555166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348974579.

The product of its digits is 4320000, while the sum is 49.

The spelling of 25223142555166 in words is "twenty-five trillion, two hundred twenty-three billion, one hundred forty-two million, five hundred fifty-five thousand, one hundred sixty-six".