125423033999 has 4 divisors (see below), whose sum is σ = 125423798664. Its totient is φ = 125422269336.

The previous prime is 125423033933. The next prime is 125423034019. The reversal of 125423033999 is 999330324521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 999330324521 = 633463 ⋅1577567.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125423033999 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 (125423033299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24932 + ... + 501465.

It is an arithmetic number, because the mean of its divisors is an integer number (31355949666).

Almost surely, 2^125423033999 is an apocalyptic number.

125423033999 is a deficient number, since it is larger than the sum of its proper divisors (764665).

125423033999 is an equidigital number, since it uses as much as digits as its factorization.

125423033999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764664.

The product of its (nonzero) digits is 1574640, while the sum is 50.

The spelling of 125423033999 in words is "one hundred twenty-five billion, four hundred twenty-three million, thirty-three thousand, nine hundred ninety-nine".