125784211255 has 24 divisors (see below), whose sum is σ = 164553152400. Its totient is φ = 92043850752.

The previous prime is 125784211207. The next prime is 125784211261. The reversal of 125784211255 is 552112487521.

It is a happy number.

It is not a de Polignac number, because 125784211255 - 2¹⁹ = 125783686967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 707290 + ... + 867079.

It is an arithmetic number, because the mean of its divisors is an integer number (6856381350).

Almost surely, 2^125784211255 is an apocalyptic number.

125784211255 is a deficient number, since it is larger than the sum of its proper divisors (38768941145).

125784211255 is a wasteful number, since it uses less digits than its factorization.

125784211255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574451 (or 1574422 counting only the distinct ones).

The product of its digits is 224000, while the sum is 43.

Adding to 125784211255 its reverse (552112487521), we get a palindrome (677896698776).

The spelling of 125784211255 in words is "one hundred twenty-five billion, seven hundred eighty-four million, two hundred eleven thousand, two hundred fifty-five".