125141044909 has 2 divisors, whose sum is σ = 125141044910. Its totient is φ = 125141044908.

The previous prime is 125141044849. The next prime is 125141044913. The reversal of 125141044909 is 909440141521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74080863684 + 51060181225 = 272178^2 + 225965^2 .

It is a cyclic number.

It is not a de Polignac number, because 125141044909 - 2¹⁵ = 125141012141 is a prime.

It is a super-2 number, since 2×125141044909² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125141044949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62570522454 + 62570522455.

It is an arithmetic number, because the mean of its divisors is an integer number (62570522455).

Almost surely, 2^125141044909 is an apocalyptic number.

It is an amenable number.

125141044909 is a deficient number, since it is larger than the sum of its proper divisors (1).

125141044909 is an equidigital number, since it uses as much as digits as its factorization.

125141044909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 125141044909 in words is "one hundred twenty-five billion, one hundred forty-one million, forty-four thousand, nine hundred nine".