125319819 has 8 divisors (see below), whose sum is σ = 167145472. Its totient is φ = 83520360.

The previous prime is 125319811. The next prime is 125319823. The reversal of 125319819 is 918913521.

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

It is not a de Polignac number, because 125319819 - 2³ = 125319811 is a prime.

It is a super-2 number, since 2×125319819² = 31410114068385522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125319811) 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, 12714 + ... + 20304.

It is an arithmetic number, because the mean of its divisors is an integer number (20893184).

Almost surely, 2^125319819 is an apocalyptic number.

125319819 is a deficient number, since it is larger than the sum of its proper divisors (41825653).

125319819 is an equidigital number, since it uses as much as digits as its factorization.

125319819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13097.

The product of its digits is 19440, while the sum is 39.

The square root of 125319819 is about 11194.6334910974. The cubic root of 125319819 is about 500.4260621723.

The spelling of 125319819 in words is "one hundred twenty-five million, three hundred nineteen thousand, eight hundred nineteen".