1872203825 has 6 divisors (see below), whose sum is σ = 2321532774. Its totient is φ = 1497763040.

The previous prime is 1872203803. The next prime is 1872203903. The reversal of 1872203825 is 5283022781.

It can be written as a sum of positive squares in 3 ways, for example, as 439657024 + 1432546801 = 20968^2 + 37849^2 .

It is not a de Polignac number, because 1872203825 - 2¹² = 1872199729 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37444052 + ... + 37444101.

It is an arithmetic number, because the mean of its divisors is an integer number (386922129).

Almost surely, 2^1872203825 is an apocalyptic number.

It is an amenable number.

1872203825 is a deficient number, since it is larger than the sum of its proper divisors (449328949).

1872203825 is an equidigital number, since it uses as much as digits as its factorization.

1872203825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74888163 (or 74888158 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 1872203825 is about 43268.9706949449. The cubic root of 1872203825 is about 1232.4927579335.

The spelling of 1872203825 in words is "one billion, eight hundred seventy-two million, two hundred three thousand, eight hundred twenty-five".