25310825 has 6 divisors (see below), whose sum is σ = 31385454. Its totient is φ = 20248640.

The previous prime is 25310819. The next prime is 25310837. The reversal of 25310825 is 52801352.

It can be written as a sum of positive squares in 3 ways, for example, as 200704 + 25110121 = 448^2 + 5011^2 .

It is not a de Polignac number, because 25310825 - 2¹⁴ = 25294441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25310794 and 25310803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 506192 + ... + 506241.

It is an arithmetic number, because the mean of its divisors is an integer number (5230909).

Almost surely, 2^25310825 is an apocalyptic number.

25310825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25310825 is a deficient number, since it is larger than the sum of its proper divisors (6074629).

25310825 is a wasteful number, since it uses less digits than its factorization.

25310825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012443 (or 1012438 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 25310825 is about 5030.9864837823. The cubic root of 25310825 is about 293.6085964971.

The spelling of 25310825 in words is "twenty-five million, three hundred ten thousand, eight hundred twenty-five".