85725219 has 16 divisors (see below), whose sum is σ = 117482400. Its totient is φ = 55568640.

The previous prime is 85725181. The next prime is 85725223. The reversal of 85725219 is 91252758.

It is not a de Polignac number, because 85725219 - 2⁷ = 85725091 is a prime.

It is a super-2 number, since 2×85725219² = 14697626345195922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85725229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41929 + ... + 43925.

It is an arithmetic number, because the mean of its divisors is an integer number (7342650).

Almost surely, 2^85725219 is an apocalyptic number.

85725219 is a deficient number, since it is larger than the sum of its proper divisors (31757181).

85725219 is a wasteful number, since it uses less digits than its factorization.

85725219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390.

The product of its digits is 50400, while the sum is 39.

The square root of 85725219 is about 9258.7914438117. The cubic root of 85725219 is about 440.9298843181.

The spelling of 85725219 in words is "eighty-five million, seven hundred twenty-five thousand, two hundred nineteen".