19425885 has 16 divisors (see below), whose sum is σ = 32717760. Its totient is φ = 9815040.

The previous prime is 19425839. The next prime is 19425893. The reversal of 19425885 is 58852491.

It is a happy number.

It is not a de Polignac number, because 19425885 - 2¹² = 19421789 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33796 + ... + 34365.

It is an arithmetic number, because the mean of its divisors is an integer number (2044860).

Almost surely, 2^19425885 is an apocalyptic number.

19425885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19425885 is a deficient number, since it is larger than the sum of its proper divisors (13291875).

19425885 is a wasteful number, since it uses less digits than its factorization.

19425885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68188.

The product of its digits is 115200, while the sum is 42.

The square root of 19425885 is about 4407.4805728443. The cubic root of 19425885 is about 268.8191918474.

The spelling of 19425885 in words is "nineteen million, four hundred twenty-five thousand, eight hundred eighty-five".