25858313 has 4 divisors (see below), whose sum is σ = 27847428. Its totient is φ = 23869200.

The previous prime is 25858307. The next prime is 25858321. The reversal of 25858313 is 31385852.

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 6822544 + 19035769 = 2612^2 + 4363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25858313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25858013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994538 + ... + 994563.

It is an arithmetic number, because the mean of its divisors is an integer number (6961857).

Almost surely, 2^25858313 is an apocalyptic number.

It is an amenable number.

25858313 is a deficient number, since it is larger than the sum of its proper divisors (1989115).

25858313 is a wasteful number, since it uses less digits than its factorization.

25858313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989114.

The product of its digits is 28800, while the sum is 35.

The square root of 25858313 is about 5085.1069801923. The cubic root of 25858313 is about 295.7104889330.

The spelling of 25858313 in words is "twenty-five million, eight hundred fifty-eight thousand, three hundred thirteen".