25989291 has 6 divisors (see below), whose sum is σ = 37540100. Its totient is φ = 17326188.

The previous prime is 25989289. The next prime is 25989317. The reversal of 25989291 is 19298952.

It is not a de Polignac number, because 25989291 - 2¹ = 25989289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25989251) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1443841 + ... + 1443858.

Almost surely, 2^25989291 is an apocalyptic number.

25989291 is a deficient number, since it is larger than the sum of its proper divisors (11550809).

25989291 is a wasteful number, since it uses less digits than its factorization.

25989291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887705 (or 2887702 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 25989291 is about 5097.9693015945. The cubic root of 25989291 is about 296.2089277034.

The spelling of 25989291 in words is "twenty-five million, nine hundred eighty-nine thousand, two hundred ninety-one".