220525205 has 4 divisors (see below), whose sum is σ = 264630252. Its totient is φ = 176420160.

The previous prime is 220525177. The next prime is 220525211. The reversal of 220525205 is 502525022.

It is a happy number.

220525205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42276004 + 178249201 = 6502^2 + 13351^2 .

It is not a de Polignac number, because 220525205 - 2¹² = 220521109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22052516 + ... + 22052525.

It is an arithmetic number, because the mean of its divisors is an integer number (66157563).

Almost surely, 2^220525205 is an apocalyptic number.

It is an amenable number.

220525205 is a deficient number, since it is larger than the sum of its proper divisors (44105047).

220525205 is an equidigital number, since it uses as much as digits as its factorization.

220525205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44105046.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 220525205 is about 14850.0910771618. The cubic root of 220525205 is about 604.1610802707.

It can be divided in two parts, 2205 and 25205, that multiplied together give a square (55577025 = 7455²).

The spelling of 220525205 in words is "two hundred twenty million, five hundred twenty-five thousand, two hundred five".