810725004 has 48 divisors (see below), whose sum is σ = 2110130400. Its totient is φ = 269180928.

The previous prime is 810724979. The next prime is 810725009. The reversal of 810725004 is 400527018.

It is a super-2 number, since 2×810725004² = 1314550064221600032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (810725009) 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 15 ways as a sum of consecutive naturals, for example, 13152 + ... + 42360.

It is an arithmetic number, because the mean of its divisors is an integer number (43961050).

Almost surely, 2^810725004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 810725004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1055065200).

810725004 is an abundant number, since it is smaller than the sum of its proper divisors (1299405396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

810725004 is a wasteful number, since it uses less digits than its factorization.

810725004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29479 (or 29471 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 810725004 is about 28473.2331146289. The cubic root of 810725004 is about 932.4477868735.

The spelling of 810725004 in words is "eight hundred ten million, seven hundred twenty-five thousand, four".