1804253400625 has 45 divisors (see below), whose sum is σ = 2441957080629. Its totient is φ = 1332049368000.

The previous prime is 1804253400619. The next prime is 1804253400641. The reversal of 1804253400625 is 5260043524081.

The square root of 1804253400625 is 1343225.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 22 ways, for example, as 1498550567409 + 305702833216 = 1224153^2 + 552904^2 .

It is not a de Polignac number, because 1804253400625 - 2³⁷ = 1666814447153 is a prime.

It is a Duffinian 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 44 ways as a sum of consecutive naturals, for example, 436546059 + ... + 436550191.

Almost surely, 2^{1804253400625} is an apocalyptic number.

1804253400625 is the 1343225-th square number.

1804253400625 is the 671613-rd centered octagonal number.

It is an amenable number.

1804253400625 is a deficient number, since it is larger than the sum of its proper divisors (637703680004).

1804253400625 is an frugal number, since it uses more digits than its factorization.

1804253400625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8312 (or 4151 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 1804253400625 in words is "one trillion, eight hundred four billion, two hundred fifty-three million, four hundred thousand, six hundred twenty-five".