125105138222 has 4 divisors (see below), whose sum is σ = 187657707336. Its totient is φ = 62552569110.

The previous prime is 125105138219. The next prime is 125105138231. The reversal of 125105138222 is 222831501521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222831501521 = 383 ⋅581805487.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31276284554 + ... + 31276284557.

It is an arithmetic number, because the mean of its divisors is an integer number (46914426834).

Almost surely, 2^125105138222 is an apocalyptic number.

125105138222 is a deficient number, since it is larger than the sum of its proper divisors (62552569114).

125105138222 is an equidigital number, since it uses as much as digits as its factorization.

125105138222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62552569113.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 125105138222 its reverse (222831501521), we get a palindrome (347936639743).

The spelling of 125105138222 in words is "one hundred twenty-five billion, one hundred five million, one hundred thirty-eight thousand, two hundred twenty-two".