40025425663 has 4 divisors (see below), whose sum is σ = 40114569600. Its totient is φ = 39936281728.

The previous prime is 40025425637. The next prime is 40025425667. The reversal of 40025425663 is 36652452004.

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 40025425663 - 2²⁹ = 39488554751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40025425667) 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, 44571295 + ... + 44572192.

It is an arithmetic number, because the mean of its divisors is an integer number (10028642400).

Almost surely, 2^40025425663 is an apocalyptic number.

40025425663 is a deficient number, since it is larger than the sum of its proper divisors (89143937).

40025425663 is an equidigital number, since it uses as much as digits as its factorization.

40025425663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89143936.

The product of its (nonzero) digits is 172800, while the sum is 37.

Adding to 40025425663 its reverse (36652452004), we get a palindrome (76677877667).

The spelling of 40025425663 in words is "forty billion, twenty-five million, four hundred twenty-five thousand, six hundred sixty-three".