25824025 has 6 divisors (see below), whose sum is σ = 32021822. Its totient is φ = 20659200.

The previous prime is 25824017. The next prime is 25824047. The reversal of 25824025 is 52042852.

It can be written as a sum of positive squares in 3 ways, for example, as 2214144 + 23609881 = 1488^2 + 4859^2 .

It is not a de Polignac number, because 25824025 - 2³ = 25824017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25823984 and 25824002.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 516456 + ... + 516505.

Almost surely, 2^25824025 is an apocalyptic number.

25824025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25824025 is a deficient number, since it is larger than the sum of its proper divisors (6197797).

25824025 is a wasteful number, since it uses less digits than its factorization.

25824025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032971 (or 1032966 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 25824025 is about 5081.7344480010. The cubic root of 25824025 is about 295.5797275526.

Adding to 25824025 its reverse (52042852), we get a palindrome (77866877).

The spelling of 25824025 in words is "twenty-five million, eight hundred twenty-four thousand, twenty-five".