125380999 has 4 divisors (see below), whose sum is σ = 125531280. Its totient is φ = 125230720.

The previous prime is 125380921. The next prime is 125381021. The reversal of 125380999 is 999083521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125380999 - 2¹¹ = 125378951 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 (125384999) 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, 73882 + ... + 75559.

It is an arithmetic number, because the mean of its divisors is an integer number (31382820).

Almost surely, 2^125380999 is an apocalyptic number.

125380999 is a deficient number, since it is larger than the sum of its proper divisors (150281).

125380999 is an equidigital number, since it uses as much as digits as its factorization.

125380999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150280.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 125380999 is about 11197.3657169890. The cubic root of 125380999 is about 500.5074834136.

The spelling of 125380999 in words is "one hundred twenty-five million, three hundred eighty thousand, nine hundred ninety-nine".