221043023025 has 48 divisors (see below), whose sum is σ = 398739032640. Its totient is φ = 107156838400.

The previous prime is 221043022987. The next prime is 221043023027. The reversal of 221043023025 is 520320340122.

It is not a de Polignac number, because 221043023025 - 2¹³ = 221043014833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221043022986 and 221043023004.

It is not an unprimeable number, because it can be changed into a prime (221043023027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7384489 + ... + 7414361.

It is an arithmetic number, because the mean of its divisors is an integer number (8307063180).

Almost surely, 2^221043023025 is an apocalyptic number.

221043023025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221043023025 is a deficient number, since it is larger than the sum of its proper divisors (177696009615).

221043023025 is a wasteful number, since it uses less digits than its factorization.

221043023025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38866 (or 38861 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 221043023025 its reverse (520320340122), we get a palindrome (741363363147).

The spelling of 221043023025 in words is "two hundred twenty-one billion, forty-three million, twenty-three thousand, twenty-five".