19898325 has 48 divisors (see below), whose sum is σ = 37497600. Its totient is φ = 10339200.

The previous prime is 19898323. The next prime is 19898357. The reversal of 19898325 is 52389891.

It is a happy number.

It is not a de Polignac number, because 19898325 - 2¹ = 19898323 is a prime.

It is a super-3 number, since 3×19898325³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19898323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27316 + ... + 28034.

It is an arithmetic number, because the mean of its divisors is an integer number (781200).

Almost surely, 2^19898325 is an apocalyptic number.

19898325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19898325 is a deficient number, since it is larger than the sum of its proper divisors (17599275).

19898325 is a wasteful number, since it uses less digits than its factorization.

19898325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 768 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 19898325 is about 4460.7538600555. The cubic root of 19898325 is about 270.9809992896.

The spelling of 19898325 in words is "nineteen million, eight hundred ninety-eight thousand, three hundred twenty-five".