25287530 has 16 divisors (see below), whose sum is σ = 45961344. Its totient is φ = 10016400.

The previous prime is 25287523. The next prime is 25287533. The reversal of 25287530 is 3578252.

It is not an unprimeable number, because it can be changed into a prime (25287533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11246 + ... + 13305.

It is an arithmetic number, because the mean of its divisors is an integer number (2872584).

Almost surely, 2^25287530 is an apocalyptic number.

25287530 is a deficient number, since it is larger than the sum of its proper divisors (20673814).

25287530 is a wasteful number, since it uses less digits than its factorization.

25287530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24661.

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 25287530 is about 5028.6707985312. The cubic root of 25287530 is about 293.5184939208.

The spelling of 25287530 in words is "twenty-five million, two hundred eighty-seven thousand, five hundred thirty".