191965125 has 64 divisors (see below), whose sum is σ = 351786240. Its totient is φ = 92192000.

The previous prime is 191965121. The next prime is 191965129. The reversal of 191965125 is 521569191.

It is an interprime number because it is at equal distance from previous prime (191965121) and next prime (191965129).

It is not a de Polignac number, because 191965125 - 2² = 191965121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191965121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 713491 + ... + 713759.

It is an arithmetic number, because the mean of its divisors is an integer number (5496660).

Almost surely, 2^191965125 is an apocalyptic number.

191965125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

191965125 is a deficient number, since it is larger than the sum of its proper divisors (159821115).

191965125 is a wasteful number, since it uses less digits than its factorization.

191965125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471 (or 461 counting only the distinct ones).

The product of its digits is 24300, while the sum is 39.

The square root of 191965125 is about 13855.1479602349. The cubic root of 191965125 is about 576.8648965261.

The spelling of 191965125 in words is "one hundred ninety-one million, nine hundred sixty-five thousand, one hundred twenty-five".