25516873 has 4 divisors (see below), whose sum is σ = 25528468. Its totient is φ = 25505280.

The previous prime is 25516871. The next prime is 25516877. The reversal of 25516873 is 37861552.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9259849 + 16257024 = 3043^2 + 4032^2 .

It is a cyclic number.

It is not a de Polignac number, because 25516873 - 2¹ = 25516871 is a prime.

It is a super-2 number, since 2×25516873² = 1302221615396258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25516871) 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, 1368 + ... + 7273.

It is an arithmetic number, because the mean of its divisors is an integer number (6382117).

Almost surely, 2^25516873 is an apocalyptic number.

It is an amenable number.

25516873 is a deficient number, since it is larger than the sum of its proper divisors (11595).

25516873 is an equidigital number, since it uses as much as digits as its factorization.

25516873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11594.

The product of its digits is 50400, while the sum is 37.

The square root of 25516873 is about 5051.4228688559. The cubic root of 25516873 is about 294.4031713941.

The spelling of 25516873 in words is "twenty-five million, five hundred sixteen thousand, eight hundred seventy-three".