20025481 has 8 divisors (see below), whose sum is σ = 22927104. Its totient is φ = 17134080.

The previous prime is 20025461. The next prime is 20025491. The reversal of 20025481 is 18452002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20025481 - 2⁷ = 20025353 is a prime.

It is a super-2 number, since 2×20025481² = 802039778562722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20025461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2256 + ... + 6718.

It is an arithmetic number, because the mean of its divisors is an integer number (2865888).

Almost surely, 2^20025481 is an apocalyptic number.

It is an amenable number.

20025481 is a deficient number, since it is larger than the sum of its proper divisors (2901623).

20025481 is an equidigital number, since it uses as much as digits as its factorization.

20025481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 20025481 is about 4474.9839105856. The cubic root of 20025481 is about 271.5569895301.

Adding to 20025481 its reverse (18452002), we get a palindrome (38477483).

The spelling of 20025481 in words is "twenty million, twenty-five thousand, four hundred eighty-one".