125665200126 has 12 divisors (see below), whose sum is σ = 272274600312. Its totient is φ = 41888400036.

The previous prime is 125665200103. The next prime is 125665200137. The reversal of 125665200126 is 621002566521.

125665200126 is a `hidden beast` number, since 1 + 2 + 5 + 6 + 6 + 520 + 0 + 126 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3490699986 + ... + 3490700021.

It is an arithmetic number, because the mean of its divisors is an integer number (22689550026).

Almost surely, 2^125665200126 is an apocalyptic number.

125665200126 is an abundant number, since it is smaller than the sum of its proper divisors (146609400186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125665200126 is a wasteful number, since it uses less digits than its factorization.

125665200126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6981400015 (or 6981400012 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 125665200126 its reverse (621002566521), we get a palindrome (746667766647).

The spelling of 125665200126 in words is "one hundred twenty-five billion, six hundred sixty-five million, two hundred thousand, one hundred twenty-six".