25605873 has 6 divisors (see below), whose sum is σ = 36986274. Its totient is φ = 17070576.

The previous prime is 25605871. The next prime is 25605883. The reversal of 25605873 is 37850652.

It can be written as a sum of positive squares in only one way, i.e., 25070049 + 535824 = 5007^2 + 732^2 .

It is not a de Polignac number, because 25605873 - 2¹ = 25605871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25605871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1422540 + ... + 1422557.

It is an arithmetic number, because the mean of its divisors is an integer number (6164379).

Almost surely, 2^25605873 is an apocalyptic number.

It is an amenable number.

25605873 is a deficient number, since it is larger than the sum of its proper divisors (11380401).

25605873 is a wasteful number, since it uses less digits than its factorization.

25605873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845103 (or 2845100 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 25605873 is about 5060.2245997584. The cubic root of 25605873 is about 294.7450559982.

The spelling of 25605873 in words is "twenty-five million, six hundred five thousand, eight hundred seventy-three".