19025985 has 16 divisors (see below), whose sum is σ = 33209280. Its totient is φ = 9224640.

The previous prime is 19025977. The next prime is 19026013. The reversal of 19025985 is 58952091.

It is not a de Polignac number, because 19025985 - 2³ = 19025977 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57490 + ... + 57819.

It is an arithmetic number, because the mean of its divisors is an integer number (2075580).

Almost surely, 2^19025985 is an apocalyptic number.

19025985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19025985 is a deficient number, since it is larger than the sum of its proper divisors (14183295).

19025985 is a wasteful number, since it uses less digits than its factorization.

19025985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115328.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 19025985 is about 4361.8786090399. The cubic root of 19025985 is about 266.9617558038.

It can be divided in two parts, 1902 and 5985, that added together give a palindrome (7887).

The spelling of 19025985 in words is "nineteen million, twenty-five thousand, nine hundred eighty-five".