25530663 has 8 divisors (see below), whose sum is σ = 34070128. Its totient is φ = 17005824.

The previous prime is 25530649. The next prime is 25530671. The reversal of 25530663 is 36603552.

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

It is not a de Polignac number, because 25530663 - 2⁶ = 25530599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25530663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25531663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1431 + ... + 7287.

It is an arithmetic number, because the mean of its divisors is an integer number (4258766).

Almost surely, 2^25530663 is an apocalyptic number.

25530663 is a deficient number, since it is larger than the sum of its proper divisors (8539465).

25530663 is a wasteful number, since it uses less digits than its factorization.

25530663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7313.

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 25530663 is about 5052.7876464383. The cubic root of 25530663 is about 294.4561962900.

The spelling of 25530663 in words is "twenty-five million, five hundred thirty thousand, six hundred sixty-three".