25089643 has 4 divisors (see below), whose sum is σ = 25106760. Its totient is φ = 25072528.

The previous prime is 25089641. The next prime is 25089661. The reversal of 25089643 is 34698052.

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

It is a cyclic number.

It is not a de Polignac number, because 25089643 - 2¹ = 25089641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25089641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6130 + ... + 9367.

It is an arithmetic number, because the mean of its divisors is an integer number (6276690).

Almost surely, 2^25089643 is an apocalyptic number.

25089643 is a deficient number, since it is larger than the sum of its proper divisors (17117).

25089643 is a wasteful number, since it uses less digits than its factorization.

25089643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17116.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 25089643 is about 5008.9562785075. The cubic root of 25089643 is about 292.7508472228.

It can be divided in two parts, 2 and 5089643, that added together give a triangular number (5089645 = T₃₁₉₀).

The spelling of 25089643 in words is "twenty-five million, eighty-nine thousand, six hundred forty-three".