125327999 has 4 divisors (see below), whose sum is σ = 125381664. Its totient is φ = 125274336.

The previous prime is 125327981. The next prime is 125328001. The reversal of 125327999 is 999723521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999723521 = 3797 ⋅263293.

It is a cyclic number.

It is not a de Polignac number, because 125327999 - 2²⁰ = 124279423 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 (125327899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23162 + ... + 28055.

It is an arithmetic number, because the mean of its divisors is an integer number (31345416).

Almost surely, 2^125327999 is an apocalyptic number.

125327999 is a deficient number, since it is larger than the sum of its proper divisors (53665).

125327999 is an equidigital number, since it uses as much as digits as its factorization.

125327999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53664.

The product of its digits is 306180, while the sum is 47.

The square root of 125327999 is about 11194.9988387672. The cubic root of 125327999 is about 500.4369500381.

The spelling of 125327999 in words is "one hundred twenty-five million, three hundred twenty-seven thousand, nine hundred ninety-nine".