125428849919 has 8 divisors (see below), whose sum is σ = 128326013760. Its totient is φ = 122564422656.

The previous prime is 125428849883. The next prime is 125428849927. The reversal of 125428849919 is 919948824521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125428849919 - 2¹² = 125428845823 is a prime.

It is a super-2 number, since 2×125428849919² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125428840919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8176394 + ... + 8191719.

It is an arithmetic number, because the mean of its divisors is an integer number (16040751720).

Almost surely, 2^125428849919 is an apocalyptic number.

125428849919 is a deficient number, since it is larger than the sum of its proper divisors (2897163841).

125428849919 is an equidigital number, since it uses as much as digits as its factorization.

125428849919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16368289.

The product of its digits is 14929920, while the sum is 62.

The spelling of 125428849919 in words is "one hundred twenty-five billion, four hundred twenty-eight million, eight hundred forty-nine thousand, nine hundred nineteen".