26151985 has 4 divisors (see below), whose sum is σ = 31382388. Its totient is φ = 20921584.

The previous prime is 26151971. The next prime is 26151991. The reversal of 26151985 is 58915162.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8946081 + 17205904 = 2991^2 + 4148^2 .

It is a cyclic number.

It is not a de Polignac number, because 26151985 - 2⁵ = 26151953 is a prime.

It is a Duffinian number.

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, 2615194 + ... + 2615203.

It is an arithmetic number, because the mean of its divisors is an integer number (7845597).

Almost surely, 2^26151985 is an apocalyptic number.

It is an amenable number.

26151985 is a deficient number, since it is larger than the sum of its proper divisors (5230403).

26151985 is an equidigital number, since it uses as much as digits as its factorization.

26151985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230402.

The product of its digits is 21600, while the sum is 37.

The square root of 26151985 is about 5113.9011527404. The cubic root of 26151985 is about 296.8257356481.

The spelling of 26151985 in words is "twenty-six million, one hundred fifty-one thousand, nine hundred eighty-five".