125500099 has 2 divisors, whose sum is σ = 125500100. Its totient is φ = 125500098.

The previous prime is 125500061. The next prime is 125500127. The reversal of 125500099 is 990005521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125500099 - 2⁹ = 125499587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125500099.

It is not a weakly prime, because it can be changed into another prime (125200099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62750049 + 62750050.

It is an arithmetic number, because the mean of its divisors is an integer number (62750050).

Almost surely, 2^125500099 is an apocalyptic number.

125500099 is a deficient number, since it is larger than the sum of its proper divisors (1).

125500099 is an equidigital number, since it uses as much as digits as its factorization.

125500099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 125500099 is about 11202.6826697894. The cubic root of 125500099 is about 500.6659113970.

The spelling of 125500099 in words is "one hundred twenty-five million, five hundred thousand, ninety-nine".