2440225021 has 4 divisors (see below), whose sum is σ = 2627934652. Its totient is φ = 2252515392.

The previous prime is 2440224989. The next prime is 2440225027. The reversal of 2440225021 is 1205220442.

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

It can be written as a sum of positive squares in 2 ways, for example, as 196308121 + 2243916900 = 14011^2 + 47370^2 .

It is a cyclic number.

It is not a de Polignac number, because 2440225021 - 2⁵ = 2440224989 is a prime.

It is a super-2 number, since 2×2440225021² = 11909396306228900882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2440224983 and 2440225001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2440225027) 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 3 ways as a sum of consecutive naturals, for example, 93854796 + ... + 93854821.

It is an arithmetic number, because the mean of its divisors is an integer number (656983663).

Almost surely, 2^2440225021 is an apocalyptic number.

It is an amenable number.

2440225021 is a deficient number, since it is larger than the sum of its proper divisors (187709631).

2440225021 is a wasteful number, since it uses less digits than its factorization.

2440225021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187709630.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 2440225021 is about 49398.6337968977. The cubic root of 2440225021 is about 1346.3044830811.

Adding to 2440225021 its reverse (1205220442), we get a palindrome (3645445463).

The spelling of 2440225021 in words is "two billion, four hundred forty million, two hundred twenty-five thousand, twenty-one".