25992563 has 4 divisors (see below), whose sum is σ = 26049408. Its totient is φ = 25935720.

The previous prime is 25992523. The next prime is 25992581. The reversal of 25992563 is 36529952.

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 25992563 - 2²⁰ = 24943987 is a prime.

It is a super-2 number, since 2×25992563² = 1351226662617938, which contains 22 as substring.

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 25992563.

It is not an unprimeable number, because it can be changed into a prime (25992523) 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, 27731 + ... + 28652.

It is an arithmetic number, because the mean of its divisors is an integer number (6512352).

Almost surely, 2^25992563 is an apocalyptic number.

25992563 is a deficient number, since it is larger than the sum of its proper divisors (56845).

25992563 is an equidigital number, since it uses as much as digits as its factorization.

25992563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56844.

The product of its digits is 145800, while the sum is 41.

The square root of 25992563 is about 5098.2902035879. The cubic root of 25992563 is about 296.2213578865.

The spelling of 25992563 in words is "twenty-five million, nine hundred ninety-two thousand, five hundred sixty-three".