2104520225 has 24 divisors (see below), whose sum is σ = 2704852920. Its totient is φ = 1623006720.

The previous prime is 2104520207. The next prime is 2104520251. The reversal of 2104520225 is 5220254012.

It can be written as a sum of positive squares in 12 ways, for example, as 178275904 + 1926244321 = 13352^2 + 43889^2 .

It is not a de Polignac number, because 2104520225 - 2⁸ = 2104519969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2104520225.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90389 + ... + 111261.

It is an arithmetic number, because the mean of its divisors is an integer number (112702205).

Almost surely, 2^2104520225 is an apocalyptic number.

2104520225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2104520225 is a deficient number, since it is larger than the sum of its proper divisors (600332695).

2104520225 is a wasteful number, since it uses less digits than its factorization.

2104520225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21029 (or 21024 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2104520225 is about 45875.0501362124. The cubic root of 2104520225 is about 1281.4973170011.

Adding to 2104520225 its reverse (5220254012), we get a palindrome (7324774237).

The spelling of 2104520225 in words is "two billion, one hundred four million, five hundred twenty thousand, two hundred twenty-five".