25628563 has 4 divisors (see below), whose sum is σ = 25877488. Its totient is φ = 25379640.

The previous prime is 25628557. The next prime is 25628579. The reversal of 25628563 is 36582652.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25628563 - 2¹⁷ = 25497491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25628543) 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 3 ways as a sum of consecutive naturals, for example, 124308 + ... + 124513.

It is an arithmetic number, because the mean of its divisors is an integer number (6469372).

Almost surely, 2^25628563 is an apocalyptic number.

25628563 is a deficient number, since it is larger than the sum of its proper divisors (248925).

25628563 is a wasteful number, since it uses less digits than its factorization.

25628563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248924.

The product of its digits is 86400, while the sum is 37.

The square root of 25628563 is about 5062.4660986519. The cubic root of 25628563 is about 294.8320906001.

The spelling of 25628563 in words is "twenty-five million, six hundred twenty-eight thousand, five hundred sixty-three".