25306825 has 12 divisors (see below), whose sum is σ = 31446028. Its totient is φ = 20203200.

The previous prime is 25306823. The next prime is 25306847. The reversal of 25306825 is 52860352.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 595984 + 24710841 = 772^2 + 4971^2 .

It is not a de Polignac number, because 25306825 - 2¹ = 25306823 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25306823) 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, 17635 + ... + 19015.

Almost surely, 2^25306825 is an apocalyptic number.

25306825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25306825 is a deficient number, since it is larger than the sum of its proper divisors (6139203).

25306825 is a wasteful number, since it uses less digits than its factorization.

25306825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2124 (or 2119 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 25306825 is about 5030.5889317256. The cubic root of 25306825 is about 293.5931288562.

The spelling of 25306825 in words is "twenty-five million, three hundred six thousand, eight hundred twenty-five".