20343025 has 6 divisors (see below), whose sum is σ = 25225382. Its totient is φ = 16274400.

The previous prime is 20343019. The next prime is 20343031. The reversal of 20343025 is 52034302.

It is an interprime number because it is at equal distance from previous prime (20343019) and next prime (20343031).

It can be written as a sum of positive squares in 3 ways, for example, as 6031936 + 14311089 = 2456^2 + 3783^2 .

It is not a de Polignac number, because 20343025 - 2¹³ = 20334833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20342993 and 20343011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 406836 + ... + 406885.

Almost surely, 2^20343025 is an apocalyptic number.

20343025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20343025 is a deficient number, since it is larger than the sum of its proper divisors (4882357).

20343025 is an equidigital number, since it uses as much as digits as its factorization.

20343025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813731 (or 813726 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20343025 is about 4510.3242677218. The cubic root of 20343025 is about 272.9848283285.

Adding to 20343025 its reverse (52034302), we get a palindrome (72377327).

The spelling of 20343025 in words is "twenty million, three hundred forty-three thousand, twenty-five".