20282425 has 6 divisors (see below), whose sum is σ = 25150238. Its totient is φ = 16225920.

The previous prime is 20282419. The next prime is 20282447. The reversal of 20282425 is 52428202.

It can be written as a sum of positive squares in 3 ways, for example, as 710649 + 19571776 = 843^2 + 4424^2 .

It is not a de Polignac number, because 20282425 - 2⁹ = 20281913 is a prime.

It is a super-2 number, since 2×20282425² = 822753527761250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 811297 = 20282425 / (2 + 0 + 2 + 8 + 2 + 4 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20282425.

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, 405624 + ... + 405673.

Almost surely, 2^20282425 is an apocalyptic number.

20282425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20282425 is a deficient number, since it is larger than the sum of its proper divisors (4867813).

20282425 is an equidigital number, since it uses as much as digits as its factorization.

20282425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811307 (or 811302 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 20282425 is about 4503.6013367082. The cubic root of 20282425 is about 272.7134931590.

The spelling of 20282425 in words is "twenty million, two hundred eighty-two thousand, four hundred twenty-five".