25327081 has 4 divisors (see below), whose sum is σ = 27275332. Its totient is φ = 23378832.

The previous prime is 25327067. The next prime is 25327087. The reversal of 25327081 is 18072352.

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 11451456 + 13875625 = 3384^2 + 3725^2 .

It is a cyclic number.

It is not a de Polignac number, because 25327081 - 2⁷ = 25326953 is a prime.

It is a super-2 number, since 2×25327081² = 1282922063961122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25327087) 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 3 ways as a sum of consecutive naturals, for example, 974106 + ... + 974131.

It is an arithmetic number, because the mean of its divisors is an integer number (6818833).

Almost surely, 2^25327081 is an apocalyptic number.

It is an amenable number.

25327081 is a deficient number, since it is larger than the sum of its proper divisors (1948251).

25327081 is a wasteful number, since it uses less digits than its factorization.

25327081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948250.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 25327081 is about 5032.6018121842. The cubic root of 25327081 is about 293.6714402264.

The spelling of 25327081 in words is "twenty-five million, three hundred twenty-seven thousand, eighty-one".