125243442255 has 16 divisors (see below), whose sum is σ = 201264576480. Its totient is φ = 66504812928.

The previous prime is 125243442251. The next prime is 125243442293. The reversal of 125243442255 is 552244342521.

It is not a de Polignac number, because 125243442255 - 2² = 125243442251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125243442251) 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, 18227052 + ... + 18233921.

It is an arithmetic number, because the mean of its divisors is an integer number (12579036030).

Almost surely, 2^125243442255 is an apocalyptic number.

125243442255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125243442255 is a deficient number, since it is larger than the sum of its proper divisors (76021134225).

125243442255 is a wasteful number, since it uses less digits than its factorization.

125243442255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36461210.

The product of its digits is 384000, while the sum is 39.

Adding to 125243442255 its reverse (552244342521), we get a palindrome (677487784776).

The spelling of 125243442255 in words is "one hundred twenty-five billion, two hundred forty-three million, four hundred forty-two thousand, two hundred fifty-five".