1025563 has 16 divisors (see below), whose sum is σ = 1347840. Its totient is φ = 756000.

The previous prime is 1025561. The next prime is 1025579. The reversal of 1025563 is 3655201.

It is a happy number.

It is not a de Polignac number, because 1025563 - 2¹ = 1025561 is a prime.

It is a Duffinian number.

1025563 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1025561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1113 + ... + 1813.

It is an arithmetic number, because the mean of its divisors is an integer number (84240).

2^1025563 is an apocalyptic number.

1025563 is a deficient number, since it is larger than the sum of its proper divisors (322277).

1025563 is a wasteful number, since it uses less digits than its factorization.

1025563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1025563 is about 1012.7008442773. The cubic root of 1025563 is about 100.8449406456.

It can be divided in two parts, 102 and 5563, that added together give a palindrome (5665).

The spelling of 1025563 in words is "one million, twenty-five thousand, five hundred sixty-three".