22025252001 has 12 divisors (see below), whose sum is σ = 30005135792. Its totient is φ = 14371082088.

The previous prime is 22025251999. The next prime is 22025252027. The reversal of 22025252001 is 10025252022.

It is not a de Polignac number, because 22025252001 - 2¹ = 22025251999 is a prime.

It is a super-2 number, since 2×22025252001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22025252101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1655155 + ... + 1668408.

Almost surely, 2^22025252001 is an apocalyptic number.

It is an amenable number.

22025252001 is a deficient number, since it is larger than the sum of its proper divisors (7979883791).

22025252001 is an equidigital number, since it uses as much as digits as its factorization.

22025252001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3323660 (or 3323613 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 22025252001 its sum of digits (21), we get a palindrome (22025252022).

The spelling of 22025252001 in words is "twenty-two billion, twenty-five million, two hundred fifty-two thousand, one".