191010125 has 16 divisors (see below), whose sum is σ = 239923632. Its totient is φ = 151819200.

The previous prime is 191010107. The next prime is 191010137. The reversal of 191010125 is 521010191.

191010125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 44382244 + 146627881 = 6662^2 + 12109^2 .

It is not a de Polignac number, because 191010125 - 2²⁴ = 174232909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 191010097 and 191010106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14759 + ... + 24491.

It is an arithmetic number, because the mean of its divisors is an integer number (14995227).

Almost surely, 2^191010125 is an apocalyptic number.

It is an amenable number.

191010125 is a deficient number, since it is larger than the sum of its proper divisors (48913507).

191010125 is an equidigital number, since it uses as much as digits as its factorization.

191010125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9905 (or 9895 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 20.

The square root of 191010125 is about 13820.6412658747. The cubic root of 191010125 is about 575.9066980514.

The spelling of 191010125 in words is "one hundred ninety-one million, ten thousand, one hundred twenty-five".