125220508077 has 24 divisors (see below), whose sum is σ = 198736307616. Its totient is φ = 69890512608.

The previous prime is 125220508051. The next prime is 125220508123. The reversal of 125220508077 is 770805022521.

It is not a de Polignac number, because 125220508077 - 2⁶ = 125220508013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125220508177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9898798 + ... + 9911439.

It is an arithmetic number, because the mean of its divisors is an integer number (8280679484).

Almost surely, 2^125220508077 is an apocalyptic number.

It is an amenable number.

125220508077 is a deficient number, since it is larger than the sum of its proper divisors (73515799539).

125220508077 is a wasteful number, since it uses less digits than its factorization.

125220508077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19810297 (or 19810290 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 39.

The spelling of 125220508077 in words is "one hundred twenty-five billion, two hundred twenty million, five hundred eight thousand, seventy-seven".