125429428399 has 4 divisors (see below), whose sum is σ = 136832103720. Its totient is φ = 114026753080.

The previous prime is 125429428381. The next prime is 125429428451. The reversal of 125429428399 is 993824924521.

It is a happy number.

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 125429428399 - 2¹¹ = 125429426351 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 (125429428699) 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 3 ways as a sum of consecutive naturals, for example, 5701337644 + ... + 5701337665.

It is an arithmetic number, because the mean of its divisors is an integer number (34208025930).

Almost surely, 2^125429428399 is an apocalyptic number.

125429428399 is a deficient number, since it is larger than the sum of its proper divisors (11402675321).

125429428399 is a wasteful number, since it uses less digits than its factorization.

125429428399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11402675320.

The product of its digits is 11197440, while the sum is 58.

The spelling of 125429428399 in words is "one hundred twenty-five billion, four hundred twenty-nine million, four hundred twenty-eight thousand, three hundred ninety-nine".