25285825 has 12 divisors (see below), whose sum is σ = 32436540. Its totient is φ = 19530560.

The previous prime is 25285759. The next prime is 25285829. The reversal of 25285825 is 52858252.

It can be written as a sum of positive squares in 6 ways, for example, as 5041 + 25280784 = 71^2 + 5028^2 .

It is not a de Polignac number, because 25285825 - 2⁷ = 25285697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25285829) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16714 + ... + 18163.

It is an arithmetic number, because the mean of its divisors is an integer number (2703045).

Almost surely, 2^25285825 is an apocalyptic number.

25285825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25285825 is a deficient number, since it is larger than the sum of its proper divisors (7150715).

25285825 is a wasteful number, since it uses less digits than its factorization.

25285825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34916 (or 34911 counting only the distinct ones).

The product of its digits is 64000, while the sum is 37.

The square root of 25285825 is about 5028.5012677735. The cubic root of 25285825 is about 293.5118969897.

The spelling of 25285825 in words is "twenty-five million, two hundred eighty-five thousand, eight hundred twenty-five".