19225985 has 16 divisors (see below), whose sum is σ = 24235200. Its totient is φ = 14621376.

The previous prime is 19225981. The next prime is 19226017. The reversal of 19225985 is 58952291.

It is a cyclic number.

It is not a de Polignac number, because 19225985 - 2² = 19225981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19225981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8726 + ... + 10704.

It is an arithmetic number, because the mean of its divisors is an integer number (1514700).

Almost surely, 2^19225985 is an apocalyptic number.

It is an amenable number.

19225985 is a deficient number, since it is larger than the sum of its proper divisors (5009215).

19225985 is a wasteful number, since it uses less digits than its factorization.

19225985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080.

The product of its digits is 64800, while the sum is 41.

The square root of 19225985 is about 4384.7445763693. The cubic root of 19225985 is about 267.8939256830.

The spelling of 19225985 in words is "nineteen million, two hundred twenty-five thousand, nine hundred eighty-five".