5001000225661 has 16 divisors (see below), whose sum is σ = 5528510729280. Its totient is φ = 4485777147520.

The previous prime is 5001000225659. The next prime is 5001000225673. The reversal of 5001000225661 is 1665220001005.

It is a cyclic number.

It is not a de Polignac number, because 5001000225661 - 2¹ = 5001000225659 is a prime.

It is a super-2 number, since 2×5001000225661² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5001000225601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2837296 + ... + 4248793.

It is an arithmetic number, because the mean of its divisors is an integer number (345531920580).

Almost surely, 2^{5001000225661} is an apocalyptic number.

It is an amenable number.

5001000225661 is a deficient number, since it is larger than the sum of its proper divisors (527510503619).

5001000225661 is a wasteful number, since it uses less digits than its factorization.

5001000225661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7086956.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 5001000225661 its reverse (1665220001005), we get a palindrome (6666220226666).

The spelling of 5001000225661 in words is "five trillion, one billion, two hundred twenty-five thousand, six hundred sixty-one".