25530506 has 16 divisors (see below), whose sum is σ = 40176000. Its totient is φ = 12144528.

The previous prime is 25530493. The next prime is 25530511. The reversal of 25530506 is 60503552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7760 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (2511000).

Almost surely, 2^25530506 is an apocalyptic number.

25530506 is a deficient number, since it is larger than the sum of its proper divisors (14645494).

25530506 is a wasteful number, since it uses less digits than its factorization.

25530506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3013.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 25530506 is about 5052.7721104360. The cubic root of 25530506 is about 294.4555927058.

The spelling of 25530506 in words is "twenty-five million, five hundred thirty thousand, five hundred six".