25862891 has 4 divisors (see below), whose sum is σ = 25878984. Its totient is φ = 25846800.

The previous prime is 25862869. The next prime is 25862911. The reversal of 25862891 is 19826852.

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 25862891 - 2¹⁴ = 25846507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25862801) 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, 5330 + ... + 8951.

It is an arithmetic number, because the mean of its divisors is an integer number (6469746).

Almost surely, 2^25862891 is an apocalyptic number.

25862891 is a deficient number, since it is larger than the sum of its proper divisors (16093).

25862891 is a wasteful number, since it uses less digits than its factorization.

25862891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16092.

The product of its digits is 69120, while the sum is 41.

The square root of 25862891 is about 5085.5570982932. The cubic root of 25862891 is about 295.7279389337.

The spelling of 25862891 in words is "twenty-five million, eight hundred sixty-two thousand, eight hundred ninety-one".