25426563 has 4 divisors (see below), whose sum is σ = 33902088. Its totient is φ = 16951040.

The previous prime is 25426561. The next prime is 25426573. The reversal of 25426563 is 36562452.

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 25426563 - 2¹ = 25426561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25426561) 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, 4237758 + ... + 4237763.

It is an arithmetic number, because the mean of its divisors is an integer number (8475522).

Almost surely, 2^25426563 is an apocalyptic number.

25426563 is a deficient number, since it is larger than the sum of its proper divisors (8475525).

25426563 is an equidigital number, since it uses as much as digits as its factorization.

25426563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8475524.

The product of its digits is 43200, while the sum is 33.

The square root of 25426563 is about 5042.4758799621. The cubic root of 25426563 is about 294.0554409768.

The spelling of 25426563 in words is "twenty-five million, four hundred twenty-six thousand, five hundred sixty-three".