40510025221 has 4 divisors (see below), whose sum is σ = 40510429344. Its totient is φ = 40509621100.

The previous prime is 40510025137. The next prime is 40510025233. The reversal of 40510025221 is 12252001504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 40510025221 - 2¹¹ = 40510023173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40510025192 and 40510025201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40510025261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74256 + ... + 294166.

It is an arithmetic number, because the mean of its divisors is an integer number (10127607336).

Almost surely, 2^40510025221 is an apocalyptic number.

It is an amenable number.

40510025221 is a deficient number, since it is larger than the sum of its proper divisors (404123).

40510025221 is a wasteful number, since it uses less digits than its factorization.

40510025221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404122.

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 40510025221 its reverse (12252001504), we get a palindrome (52762026725).

The spelling of 40510025221 in words is "forty billion, five hundred ten million, twenty-five thousand, two hundred twenty-one".