125679551801 has 2 divisors, whose sum is σ = 125679551802. Its totient is φ = 125679551800.

The previous prime is 125679551783. The next prime is 125679551813. The reversal of 125679551801 is 108155976521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120739570576 + 4939981225 = 347476^2 + 70285^2 .

It is a cyclic number.

It is not a de Polignac number, because 125679551801 - 2¹⁸ = 125679289657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125679551801.

It is not a weakly prime, because it can be changed into another prime (125679551891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62839775900 + 62839775901.

It is an arithmetic number, because the mean of its divisors is an integer number (62839775901).

Almost surely, 2^125679551801 is an apocalyptic number.

It is an amenable number.

125679551801 is a deficient number, since it is larger than the sum of its proper divisors (1).

125679551801 is an equidigital number, since it uses as much as digits as its factorization.

125679551801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 50.

The spelling of 125679551801 in words is "one hundred twenty-five billion, six hundred seventy-nine million, five hundred fifty-one thousand, eight hundred one".