22025252021 has 8 divisors (see below), whose sum is σ = 22826413920. Its totient is φ = 21226868208.

The previous prime is 22025251999. The next prime is 22025252027. The reversal of 22025252021 is 12025252022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22025252021 - 2²² = 22021057717 is a prime.

It is a super-2 number, since 2×22025252021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22025252027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678371 + ... + 710096.

It is an arithmetic number, because the mean of its divisors is an integer number (2853301740).

Almost surely, 2^22025252021 is an apocalyptic number.

It is an amenable number.

22025252021 is a deficient number, since it is larger than the sum of its proper divisors (801161899).

22025252021 is a wasteful number, since it uses less digits than its factorization.

22025252021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389043.

The product of its (nonzero) digits is 1600, while the sum is 23.

Subtracting from 22025252021 its reverse (12025252022), we obtain a palindrome (9999999999).

The spelling of 22025252021 in words is "twenty-two billion, twenty-five million, two hundred fifty-two thousand, twenty-one".