20499325 has 48 divisors (see below), whose sum is σ = 33140736. Its totient is φ = 12196800.

The previous prime is 20499313. The next prime is 20499329. The reversal of 20499325 is 52399402.

It is not a de Polignac number, because 20499325 - 2⁹ = 20498813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20499329) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 44044 + ... + 44506.

It is an arithmetic number, because the mean of its divisors is an integer number (690432).

Almost surely, 2^20499325 is an apocalyptic number.

20499325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20499325 is a deficient number, since it is larger than the sum of its proper divisors (12641411).

20499325 is a wasteful number, since it uses less digits than its factorization.

20499325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 20499325 is about 4527.6180271750. The cubic root of 20499325 is about 273.6821798452.

The spelling of 20499325 in words is "twenty million, four hundred ninety-nine thousand, three hundred twenty-five".