25864858 has 4 divisors (see below), whose sum is σ = 38797290. Its totient is φ = 12932428.

The previous prime is 25864847. The next prime is 25864859. The reversal of 25864858 is 85846852.

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

It can be written as a sum of positive squares in only one way, i.e., 20403289 + 5461569 = 4517^2 + 2337^2 .

It is not an unprimeable number, because it can be changed into a prime (25864859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6466213 + ... + 6466216.

Almost surely, 2^25864858 is an apocalyptic number.

25864858 is a deficient number, since it is larger than the sum of its proper divisors (12932432).

25864858 is a wasteful number, since it uses less digits than its factorization.

25864858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12932431.

The product of its digits is 614400, while the sum is 46.

The square root of 25864858 is about 5085.7504854249. The cubic root of 25864858 is about 295.7354359315.

The spelling of 25864858 in words is "twenty-five million, eight hundred sixty-four thousand, eight hundred fifty-eight".