25530025 has 12 divisors (see below), whose sum is σ = 32178124. Its totient is φ = 20088000.

The previous prime is 25530013. The next prime is 25530061. The reversal of 25530025 is 52003552.

It can be written as a sum of positive squares in 6 ways, for example, as 419904 + 25110121 = 648^2 + 5011^2 .

It is not a de Polignac number, because 25530025 - 2⁵ = 25529993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25529978 and 25530005.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6846 + ... + 9895.

Almost surely, 2^25530025 is an apocalyptic number.

25530025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25530025 is a deficient number, since it is larger than the sum of its proper divisors (6648099).

25530025 is a wasteful number, since it uses less digits than its factorization.

25530025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16812 (or 16807 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 22.

The square root of 25530025 is about 5052.7245125773. The cubic root of 25530025 is about 294.4537434928.

Adding to 25530025 its reverse (52003552), we get a palindrome (77533577).

The spelling of 25530025 in words is "twenty-five million, five hundred thirty thousand, twenty-five".