1025435563 has 32 divisors (see below), whose sum is σ = 1152403200. Its totient is φ = 907984896.

The previous prime is 1025435549. The next prime is 1025435569. The reversal of 1025435563 is 3655345201.

It is not a de Polignac number, because 1025435563 - 2⁵ = 1025435531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025435569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4400895 + ... + 4401127.

It is an arithmetic number, because the mean of its divisors is an integer number (36012600).

Almost surely, 2^1025435563 is an apocalyptic number.

1025435563 is a deficient number, since it is larger than the sum of its proper divisors (126967637).

1025435563 is a wasteful number, since it uses less digits than its factorization.

1025435563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471.

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 1025435563 is about 32022.4228158957. The cubic root of 1025435563 is about 1008.4076345737.

The spelling of 1025435563 in words is "one billion, twenty-five million, four hundred thirty-five thousand, five hundred sixty-three".