22025641 has 4 divisors (see below), whose sum is σ = 24027984. Its totient is φ = 20023300.

The previous prime is 22025639. The next prime is 22025669. The reversal of 22025641 is 14652022.

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.

It is not a de Polignac number, because 22025641 - 2¹ = 22025639 is a prime.

It is a super-2 number, since 2×22025641² = 970257722921762, which contains 22 as substring.

It is a Duffinian number.

22025641 is a modest number, since divided by 25641 gives 22 as remainder.

It is not an unprimeable number, because it can be changed into a prime (22025611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001155 + ... + 1001176.

It is an arithmetic number, because the mean of its divisors is an integer number (6006996).

Almost surely, 2^22025641 is an apocalyptic number.

It is an amenable number.

22025641 is a deficient number, since it is larger than the sum of its proper divisors (2002343).

22025641 is a wasteful number, since it uses less digits than its factorization.

22025641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002342.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 22025641 is about 4693.1483036444. The cubic root of 22025641 is about 280.3127500291.

Adding to 22025641 its reverse (14652022), we get a palindrome (36677663).

The spelling of 22025641 in words is "twenty-two million, twenty-five thousand, six hundred forty-one".