2205400225 has 96 divisors (see below), whose sum is σ = 3436494336. Its totient is φ = 1369804800.

The previous prime is 2205400217. The next prime is 2205400229. The reversal of 2205400225 is 5220045022.

It is a happy number.

2205400225 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 2205400225 - 2³ = 2205400217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2205400196 and 2205400205.

It is not an unprimeable number, because it can be changed into a prime (2205400229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11194827 + ... + 11195023.

It is an arithmetic number, because the mean of its divisors is an integer number (35796816).

Almost surely, 2^2205400225 is an apocalyptic number.

2205400225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2205400225 is a deficient number, since it is larger than the sum of its proper divisors (1231094111).

2205400225 is a wasteful number, since it uses less digits than its factorization.

2205400225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 2205400225 is about 46961.6889070229. The cubic root of 2205400225 is about 1301.6547419335.

Adding to 2205400225 its reverse (5220045022), we get a palindrome (7425445247).

The spelling of 2205400225 in words is "two billion, two hundred five million, four hundred thousand, two hundred twenty-five".