26625981 has 16 divisors (see below), whose sum is σ = 36443520. Its totient is φ = 17284800.

The previous prime is 26625967. The next prime is 26625997. The reversal of 26625981 is 18952662.

It is not a de Polignac number, because 26625981 - 2⁶ = 26625917 is a prime.

It is a super-2 number, since 2×26625981² = 1417885728424722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26625481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23455 + ... + 24563.

It is an arithmetic number, because the mean of its divisors is an integer number (2277720).

Almost surely, 2^26625981 is an apocalyptic number.

It is an amenable number.

26625981 is a deficient number, since it is larger than the sum of its proper divisors (9817539).

26625981 is a wasteful number, since it uses less digits than its factorization.

26625981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316.

The product of its digits is 51840, while the sum is 39.

The square root of 26625981 is about 5160.0369184726. The cubic root of 26625981 is about 298.6082983158.

The spelling of 26625981 in words is "twenty-six million, six hundred twenty-five thousand, nine hundred eighty-one".