125111010517 has 2 divisors, whose sum is σ = 125111010518. Its totient is φ = 125111010516.

The previous prime is 125111010487. The next prime is 125111010523. The reversal of 125111010517 is 715010111521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101382380836 + 23728629681 = 318406^2 + 154041^2 .

It is a cyclic number.

It is not a de Polignac number, because 125111010517 - 2³⁵ = 90751272149 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125111010491 and 125111010500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125111010527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62555505258 + 62555505259.

It is an arithmetic number, because the mean of its divisors is an integer number (62555505259).

Almost surely, 2^125111010517 is an apocalyptic number.

It is an amenable number.

125111010517 is a deficient number, since it is larger than the sum of its proper divisors (1).

125111010517 is an equidigital number, since it uses as much as digits as its factorization.

125111010517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 25.

The spelling of 125111010517 in words is "one hundred twenty-five billion, one hundred eleven million, ten thousand, five hundred seventeen".