725808001 has 4 divisors (see below), whose sum is σ = 732466900. Its totient is φ = 719149104.

The previous prime is 725807983. The next prime is 725808011. The reversal of 725808001 is 100808527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 435139600 + 290668401 = 20860^2 + 17049^2 .

It is a cyclic number.

It is not a de Polignac number, because 725808001 - 2¹⁷ = 725676929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725808011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3329286 + ... + 3329503.

It is an arithmetic number, because the mean of its divisors is an integer number (183116725).

Almost surely, 2^725808001 is an apocalyptic number.

It is an amenable number.

725808001 is a deficient number, since it is larger than the sum of its proper divisors (6658899).

725808001 is a wasteful number, since it uses less digits than its factorization.

725808001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6658898.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 725808001 is about 26940.8240594084. The cubic root of 725808001 is about 898.6844982739.

The spelling of 725808001 in words is "seven hundred twenty-five million, eight hundred eight thousand, one".