25803020 has 12 divisors (see below), whose sum is σ = 54186384. Its totient is φ = 10321200.

The previous prime is 25802999. The next prime is 25803049. The reversal of 25803020 is 2030852.

It is a super-2 number, since 2×25803020² = 1331591682240800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1290151 = 25803020 / (2 + 5 + 8 + 0 + 3 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 25802983 and 25803001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645056 + ... + 645095.

It is an arithmetic number, because the mean of its divisors is an integer number (4515532).

Almost surely, 2^25803020 is an apocalyptic number.

25803020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25803020 is an abundant number, since it is smaller than the sum of its proper divisors (28383364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25803020 is a wasteful number, since it uses less digits than its factorization.

25803020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290160 (or 1290158 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 25803020 is about 5079.6673119408. The cubic root of 25803020 is about 295.4995652968.

Adding to 25803020 its reverse (2030852), we get a palindrome (27833872).

The spelling of 25803020 in words is "twenty-five million, eight hundred three thousand, twenty".