1804210825 has 12 divisors (see below), whose sum is σ = 2237803200. Its totient is φ = 1442993360.

The previous prime is 1804210823. The next prime is 1804210871. The reversal of 1804210825 is 5280124081.

It is not a de Polignac number, because 1804210825 - 2¹ = 1804210823 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1804210823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128292 + ... + 141658.

It is an arithmetic number, because the mean of its divisors is an integer number (186483600).

Almost surely, 2^1804210825 is an apocalyptic number.

It is an amenable number.

1804210825 is a deficient number, since it is larger than the sum of its proper divisors (433592375).

1804210825 is a wasteful number, since it uses less digits than its factorization.

1804210825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18776 (or 18771 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 1804210825 is about 42476.0029310669. The cubic root of 1804210825 is about 1217.3882192279.

The spelling of 1804210825 in words is "one billion, eight hundred four million, two hundred ten thousand, eight hundred twenty-five".