25803011 has 8 divisors (see below), whose sum is σ = 28746480. Its totient is φ = 22996512.

The previous prime is 25802999. The next prime is 25803049. The reversal of 25803011 is 11030852.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25803011 is a prime.

It is a super-2 number, since 2×25803011² = 1331590753332242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25802011) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 33845 + ... + 34598.

It is an arithmetic number, because the mean of its divisors is an integer number (3593310).

Almost surely, 2^25803011 is an apocalyptic number.

25803011 is a deficient number, since it is larger than the sum of its proper divisors (2943469).

25803011 is a wasteful number, since it uses less digits than its factorization.

25803011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68485.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 25803011 is about 5079.6664260559. Note that the first 3 decimals coincide. The cubic root of 25803011 is about 295.4995309404.

Adding to 25803011 its reverse (11030852), we get a palindrome (36833863).

The spelling of 25803011 in words is "twenty-five million, eight hundred three thousand, eleven".