221140335025 has 24 divisors (see below), whose sum is σ = 286313442624. Its totient is φ = 169115707200.

The previous prime is 221140335023. The next prime is 221140335029. The reversal of 221140335025 is 520533041122.

It is not a de Polignac number, because 221140335025 - 2¹ = 221140335023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221140334984 and 221140335002.

It is not an unprimeable number, because it can be changed into a prime (221140335023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 817335 + ... + 1053715.

It is an arithmetic number, because the mean of its divisors is an integer number (11929726776).

Almost surely, 2^221140335025 is an apocalyptic number.

221140335025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221140335025 is a deficient number, since it is larger than the sum of its proper divisors (65173107599).

221140335025 is a wasteful number, since it uses less digits than its factorization.

221140335025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238041 (or 238036 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 221140335025 its reverse (520533041122), we get a palindrome (741673376147).

The spelling of 221140335025 in words is "two hundred twenty-one billion, one hundred forty million, three hundred thirty-five thousand, twenty-five".