20452425 has 48 divisors (see below), whose sum is σ = 39045120. Its totient is φ = 9253440.

The previous prime is 20452363. The next prime is 20452427. The reversal of 20452425 is 52425402.

It is a happy number.

It is not a de Polignac number, because 20452425 - 2⁷ = 20452297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20452395 and 20452404.

It is not an unprimeable number, because it can be changed into a prime (20452427) 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, 85456 + ... + 85694.

It is an arithmetic number, because the mean of its divisors is an integer number (813440).

Almost surely, 2^20452425 is an apocalyptic number.

20452425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20452425 is a deficient number, since it is larger than the sum of its proper divisors (18592695).

20452425 is a wasteful number, since it uses less digits than its factorization.

20452425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 20452425 is about 4522.4357375202. The cubic root of 20452425 is about 273.4733031214.

Adding to 20452425 its reverse (52425402), we get a palindrome (72877827).

The spelling of 20452425 in words is "twenty million, four hundred fifty-two thousand, four hundred twenty-five".