125279289277 has 2 divisors, whose sum is σ = 125279289278. Its totient is φ = 125279289276.

The previous prime is 125279289263. The next prime is 125279289287. The reversal of 125279289277 is 772982972521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 113211387961 + 12067901316 = 336469^2 + 109854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125279289277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125279289287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62639644638 + 62639644639.

It is an arithmetic number, because the mean of its divisors is an integer number (62639644639).

Almost surely, 2^125279289277 is an apocalyptic number.

It is an amenable number.

125279289277 is a deficient number, since it is larger than the sum of its proper divisors (1).

125279289277 is an equidigital number, since it uses as much as digits as its factorization.

125279289277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17781120, while the sum is 61.

The spelling of 125279289277 in words is "one hundred twenty-five billion, two hundred seventy-nine million, two hundred eighty-nine thousand, two hundred seventy-seven".