25425563 has 4 divisors (see below), whose sum is σ = 25483920. Its totient is φ = 25367208.

The previous prime is 25425551. The next prime is 25425577. The reversal of 25425563 is 36552452.

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 25425563 - 2²⁴ = 8648347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25425163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28520 + ... + 29397.

It is an arithmetic number, because the mean of its divisors is an integer number (6370980).

Almost surely, 2^25425563 is an apocalyptic number.

25425563 is a deficient number, since it is larger than the sum of its proper divisors (58357).

25425563 is an equidigital number, since it uses as much as digits as its factorization.

25425563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58356.

The product of its digits is 36000, while the sum is 32.

The square root of 25425563 is about 5042.3767213488. The cubic root of 25425563 is about 294.0515859625.

The spelling of 25425563 in words is "twenty-five million, four hundred twenty-five thousand, five hundred sixty-three".