125450103109 has 2 divisors, whose sum is σ = 125450103110. Its totient is φ = 125450103108.

The previous prime is 125450103101. The next prime is 125450103139. The reversal of 125450103109 is 901301054521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115199148100 + 10250955009 = 339410^2 + 101247^2 .

It is a cyclic number.

It is not a de Polignac number, because 125450103109 - 2³ = 125450103101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125450103101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62725051554 + 62725051555.

It is an arithmetic number, because the mean of its divisors is an integer number (62725051555).

Almost surely, 2^125450103109 is an apocalyptic number.

It is an amenable number.

125450103109 is a deficient number, since it is larger than the sum of its proper divisors (1).

125450103109 is an equidigital number, since it uses as much as digits as its factorization.

125450103109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 125450103109 in words is "one hundred twenty-five billion, four hundred fifty million, one hundred three thousand, one hundred nine".