25620563 has 4 divisors (see below), whose sum is σ = 25981488. Its totient is φ = 25259640.

The previous prime is 25620533. The next prime is 25620577. The reversal of 25620563 is 36502652.

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 25620563 - 2¹⁴ = 25604179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25620533) 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, 180356 + ... + 180497.

It is an arithmetic number, because the mean of its divisors is an integer number (6495372).

Almost surely, 2^25620563 is an apocalyptic number.

25620563 is a deficient number, since it is larger than the sum of its proper divisors (360925).

25620563 is an equidigital number, since it uses as much as digits as its factorization.

25620563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360924.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 25620563 is about 5061.6759082343. The cubic root of 25620563 is about 294.8014099596.

The spelling of 25620563 in words is "twenty-five million, six hundred twenty thousand, five hundred sixty-three".