125169199 has 16 divisors (see below), whose sum is σ = 131090400. Its totient is φ = 119433600.

The previous prime is 125169139. The next prime is 125169203. The reversal of 125169199 is 991961521.

It is a cyclic number.

It is not a de Polignac number, because 125169199 - 2¹⁷ = 125038127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125169139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358477 + ... + 358825.

It is an arithmetic number, because the mean of its divisors is an integer number (8193150).

Almost surely, 2^125169199 is an apocalyptic number.

125169199 is a deficient number, since it is larger than the sum of its proper divisors (5921201).

125169199 is a wasteful number, since it uses less digits than its factorization.

125169199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570.

The product of its digits is 43740, while the sum is 43.

The square root of 125169199 is about 11187.9041379518. The cubic root of 125169199 is about 500.2254969536.

The spelling of 125169199 in words is "one hundred twenty-five million, one hundred sixty-nine thousand, one hundred ninety-nine".