2209990025 has 12 divisors (see below), whose sum is σ = 2792094732. Its totient is φ = 1734632640.

The previous prime is 2209990019. The next prime is 2209990033. The reversal of 2209990025 is 5200999022.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 9535744 + 2200454281 = 3088^2 + 46909^2 .

It is not a de Polignac number, because 2209990025 - 2⁴ = 2209990009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 832634 + ... + 835283.

It is an arithmetic number, because the mean of its divisors is an integer number (232674561).

Almost surely, 2^2209990025 is an apocalyptic number.

2209990025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2209990025 is a deficient number, since it is larger than the sum of its proper divisors (582104707).

2209990025 is a wasteful number, since it uses less digits than its factorization.

2209990025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667980 (or 1667975 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 2209990025 is about 47010.5310010427. The cubic root of 2209990025 is about 1302.5571019871.

It can be divided in two parts, 2209 and 990025, that multiplied together give a square (2186965225 = 46765²).

The spelling of 2209990025 in words is "two billion, two hundred nine million, nine hundred ninety thousand, twenty-five".