2025221111 has 4 divisors (see below), whose sum is σ = 2053745424. Its totient is φ = 1996696800.

The previous prime is 2025221089. The next prime is 2025221113. The reversal of 2025221111 is 1111225202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2025221111 is a prime.

It is a super-4 number, since 4×2025221111⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2025221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2025221113) 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, 14262050 + ... + 14262191.

It is an arithmetic number, because the mean of its divisors is an integer number (513436356).

Almost surely, 2^2025221111 is an apocalyptic number.

2025221111 is a deficient number, since it is larger than the sum of its proper divisors (28524313).

2025221111 is an equidigital number, since it uses as much as digits as its factorization.

2025221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28524312.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 2025221111 is about 45002.4567218280. The cubic root of 2025221111 is about 1265.1950437434.

Adding to 2025221111 its reverse (1111225202), we get a palindrome (3136446313).

The spelling of 2025221111 in words is "two billion, twenty-five million, two hundred twenty-one thousand, one hundred eleven".