2289891925 has 24 divisors (see below), whose sum is σ = 3022179336. Its totient is φ = 1715159040.

The previous prime is 2289891917. The next prime is 2289891931. The reversal of 2289891925 is 5291989822.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 133125444 + 2156766481 = 11538^2 + 46441^2 .

It is not a de Polignac number, because 2289891925 - 2³ = 2289891917 is a prime.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 68067 + ... + 95983.

It is an arithmetic number, because the mean of its divisors is an integer number (125924139).

Almost surely, 2^2289891925 is an apocalyptic number.

2289891925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2289891925 is a deficient number, since it is larger than the sum of its proper divisors (732287411).

2289891925 is a wasteful number, since it uses less digits than its factorization.

2289891925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28137 (or 28132 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 55.

The square root of 2289891925 is about 47852.8152254389. The cubic root of 2289891925 is about 1318.0695544035.

The spelling of 2289891925 in words is "two billion, two hundred eighty-nine million, eight hundred ninety-one thousand, nine hundred twenty-five".