221882025 has 12 divisors (see below), whose sum is σ = 366845072. Its totient is φ = 118337040.

The previous prime is 221881969. The next prime is 221882027. The reversal of 221882025 is 520288122.

It is not a de Polignac number, because 221882025 - 2¹³ = 221873833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221881983 and 221882001.

It is not an unprimeable number, because it can be changed into a prime (221882027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1479139 + ... + 1479288.

Almost surely, 2^221882025 is an apocalyptic number.

221882025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

221882025 is a deficient number, since it is larger than the sum of its proper divisors (144963047).

221882025 is a wasteful number, since it uses less digits than its factorization.

221882025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2958440 (or 2958435 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 221882025 is about 14895.7049178614. The cubic root of 221882025 is about 605.3976167269.

The spelling of 221882025 in words is "two hundred twenty-one million, eight hundred eighty-two thousand, twenty-five".