40025563 has 4 divisors (see below), whose sum is σ = 40392880. Its totient is φ = 39658248.

The previous prime is 40025551. The next prime is 40025567. The reversal of 40025563 is 36552004.

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 40025563 - 2²⁵ = 6471131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40025567) 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, 183495 + ... + 183712.

It is an arithmetic number, because the mean of its divisors is an integer number (10098220).

Almost surely, 2^40025563 is an apocalyptic number.

40025563 is a deficient number, since it is larger than the sum of its proper divisors (367317).

40025563 is a wasteful number, since it uses less digits than its factorization.

40025563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367316.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40025563 is about 6326.5759301537. The cubic root of 40025563 is about 342.0680273464.

Adding to 40025563 its reverse (36552004), we get a palindrome (76577567).

The spelling of 40025563 in words is "forty million, twenty-five thousand, five hundred sixty-three".