26250989 has 8 divisors (see below), whose sum is σ = 27984000. Its totient is φ = 24553152.

The previous prime is 26250979. The next prime is 26251007. The reversal of 26250989 is 98905262.

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 26250989 - 2¹² = 26246893 is a prime.

It is a super-2 number, since 2×26250989² = 1378228846956242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26250919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7244 + ... + 10245.

It is an arithmetic number, because the mean of its divisors is an integer number (3498000).

Almost surely, 2^26250989 is an apocalyptic number.

It is an amenable number.

26250989 is a deficient number, since it is larger than the sum of its proper divisors (1733011).

26250989 is a wasteful number, since it uses less digits than its factorization.

26250989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17587.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 26250989 is about 5123.5718985879. The cubic root of 26250989 is about 297.1998299969.

The spelling of 26250989 in words is "twenty-six million, two hundred fifty thousand, nine hundred eighty-nine".