2245665725 has 6 divisors (see below), whose sum is σ = 2784625530. Its totient is φ = 1796532560.

The previous prime is 2245665713. The next prime is 2245665757. The reversal of 2245665725 is 5275665422.

It can be written as a sum of positive squares in 3 ways, for example, as 589664089 + 1656001636 = 24283^2 + 40694^2 .

It is not a de Polignac number, because 2245665725 - 2¹² = 2245661629 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44913290 + ... + 44913339.

It is an arithmetic number, because the mean of its divisors is an integer number (464104255).

Almost surely, 2^2245665725 is an apocalyptic number.

2245665725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2245665725 is a deficient number, since it is larger than the sum of its proper divisors (538959805).

2245665725 is an equidigital number, since it uses as much as digits as its factorization.

2245665725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89826639 (or 89826634 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 44.

The square root of 2245665725 is about 47388.4556089350. The cubic root of 2245665725 is about 1309.5287478072.

The spelling of 2245665725 in words is "two billion, two hundred forty-five million, six hundred sixty-five thousand, seven hundred twenty-five".