125771777127 has 24 divisors (see below), whose sum is σ = 193353548544. Its totient is φ = 78506717184.

The previous prime is 125771777113. The next prime is 125771777171. The reversal of 125771777127 is 721777177521.

It is not a de Polignac number, because 125771777127 - 2⁴ = 125771777111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125771727127) 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, 2100103 + ... + 2159160.

It is an arithmetic number, because the mean of its divisors is an integer number (8056397856).

Almost surely, 2^125771777127 is an apocalyptic number.

125771777127 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

125771777127 is a deficient number, since it is larger than the sum of its proper divisors (67581771417).

125771777127 is a wasteful number, since it uses less digits than its factorization.

125771777127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259479 (or 4259476 counting only the distinct ones).

The product of its digits is 2352980, while the sum is 54.

The spelling of 125771777127 in words is "one hundred twenty-five billion, seven hundred seventy-one million, seven hundred seventy-seven thousand, one hundred twenty-seven".