25032530 has 8 divisors (see below), whose sum is σ = 45058572. Its totient is φ = 10013008.

The previous prime is 25032521. The next prime is 25032559. The reversal of 25032530 is 3523052.

It can be written as a sum of positive squares in 2 ways, for example, as 22743361 + 2289169 = 4769^2 + 1513^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1251617 + ... + 1251636.

Almost surely, 2^25032530 is an apocalyptic number.

25032530 is a deficient number, since it is larger than the sum of its proper divisors (20026042).

25032530 is a wasteful number, since it uses less digits than its factorization.

25032530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503260.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 25032530 is about 5003.2519424870. The cubic root of 25032530 is about 292.5285432491.

Adding to 25032530 its reverse (3523052), we get a palindrome (28555582).

It can be divided in two parts, 250325 and 30, that multiplied together give a triangular number (7509750 = T₃₈₇₅).

The spelling of 25032530 in words is "twenty-five million, thirty-two thousand, five hundred thirty".