20325425 has 6 divisors (see below), whose sum is σ = 25203558. Its totient is φ = 16260320.

The previous prime is 20325401. The next prime is 20325443. The reversal of 20325425 is 52452302.

It can be written as a sum of positive squares in 3 ways, for example, as 5216656 + 15108769 = 2284^2 + 3887^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20325425 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20325425.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 406484 + ... + 406533.

It is an arithmetic number, because the mean of its divisors is an integer number (4200593).

Almost surely, 2^20325425 is an apocalyptic number.

20325425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20325425 is a deficient number, since it is larger than the sum of its proper divisors (4878133).

20325425 is an equidigital number, since it uses as much as digits as its factorization.

20325425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813027 (or 813022 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20325425 is about 4508.3727663094. The cubic root of 20325425 is about 272.9060803021.

Adding to 20325425 its reverse (52452302), we get a palindrome (72777727).

The spelling of 20325425 in words is "twenty million, three hundred twenty-five thousand, four hundred twenty-five".