40502225081 has 2 divisors, whose sum is σ = 40502225082. Its totient is φ = 40502225080.

The previous prime is 40502225053. The next prime is 40502225111. The reversal of 40502225081 is 18052220504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38048013481 + 2454211600 = 195059^2 + 49540^2 .

It is a cyclic number.

It is not a de Polignac number, because 40502225081 - 2¹⁴ = 40502208697 is a prime.

It is a super-2 number, since 2×40502225081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40502225051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20251112540 + 20251112541.

It is an arithmetic number, because the mean of its divisors is an integer number (20251112541).

Almost surely, 2^40502225081 is an apocalyptic number.

It is an amenable number.

40502225081 is a deficient number, since it is larger than the sum of its proper divisors (1).

40502225081 is an equidigital number, since it uses as much as digits as its factorization.

40502225081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 40502225081 its reverse (18052220504), we get a palindrome (58554445585).

The spelling of 40502225081 in words is "forty billion, five hundred two million, two hundred twenty-five thousand, eighty-one".