221980425 has 12 divisors (see below), whose sum is σ = 367007760. Its totient is φ = 118389520.

The previous prime is 221980399. The next prime is 221980453. The reversal of 221980425 is 524089122.

221980425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221980425 - 2⁵ = 221980393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1479795 + ... + 1479944.

It is an arithmetic number, because the mean of its divisors is an integer number (30583980).

Almost surely, 2^221980425 is an apocalyptic number.

221980425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221980425 is a deficient number, since it is larger than the sum of its proper divisors (145027335).

221980425 is a wasteful number, since it uses less digits than its factorization.

221980425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2959752 (or 2959747 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 221980425 is about 14899.0075172811. The cubic root of 221980425 is about 605.4870971936.

The spelling of 221980425 in words is "two hundred twenty-one million, nine hundred eighty thousand, four hundred twenty-five".