20195625 has 20 divisors (see below), whose sum is σ = 33651728. Its totient is φ = 10770000.

The previous prime is 20195621. The next prime is 20195647. The reversal of 20195625 is 52659102.

It is a happy number.

It is not a de Polignac number, because 20195625 - 2² = 20195621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20195592 and 20195601.

It is not an unprimeable number, because it can be changed into a prime (20195621) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3511 + ... + 7260.

Almost surely, 2^20195625 is an apocalyptic number.

20195625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20195625 is a deficient number, since it is larger than the sum of its proper divisors (13456103).

20195625 is an equidigital number, since it uses as much as digits as its factorization.

20195625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10794 (or 10779 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 20195625 is about 4493.9542721305. The cubic root of 20195625 is about 272.3239049697.

The spelling of 20195625 in words is "twenty million, one hundred ninety-five thousand, six hundred twenty-five".