220455025 has 12 divisors (see below), whose sum is σ = 312416512. Its totient is φ = 151169040.

The previous prime is 220454987. The next prime is 220455049. The reversal of 220455025 is 520554022.

It is a happy number.

It is not a de Polignac number, because 220455025 - 2¹¹ = 220452977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 629697 + ... + 630046.

Almost surely, 2^220455025 is an apocalyptic number.

220455025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220455025 is a deficient number, since it is larger than the sum of its proper divisors (91961487).

220455025 is a wasteful number, since it uses less digits than its factorization.

220455025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259760 (or 1259755 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The square root of 220455025 is about 14847.7279406649. The cubic root of 220455025 is about 604.0969840098.

The spelling of 220455025 in words is "two hundred twenty million, four hundred fifty-five thousand, twenty-five".