125219865 has 8 divisors (see below), whose sum is σ = 200351808. Its totient is φ = 66783920.

The previous prime is 125219837. The next prime is 125219917. The reversal of 125219865 is 568912521.

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

It is not a de Polignac number, because 125219865 - 2¹⁷ = 125088793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4173981 + ... + 4174010.

It is an arithmetic number, because the mean of its divisors is an integer number (25043976).

Almost surely, 2^125219865 is an apocalyptic number.

125219865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125219865 is a deficient number, since it is larger than the sum of its proper divisors (75131943).

125219865 is an equidigital number, since it uses as much as digits as its factorization.

125219865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8347999.

The product of its digits is 43200, while the sum is 39.

The square root of 125219865 is about 11190.1682292984. The cubic root of 125219865 is about 500.2929816233.

The spelling of 125219865 in words is "one hundred twenty-five million, two hundred nineteen thousand, eight hundred sixty-five".