808030199025 has 135 divisors (see below), whose sum is σ = 1689765037259. Its totient is φ = 369083201760.

The previous prime is 808030198967. The next prime is 808030199033. The reversal of 808030199025 is 520991030808.

It is a happy number.

The square root of 808030199025 is 898905.

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

808030199025 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 290890871649 + 517139327376 = 539343^2 + 719124^2 .

It is not a de Polignac number, because 808030199025 - 2⁹ = 808030198513 is a prime.

It is a super-2 number, since 2×808030199025² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 660694564 + ... + 660695786.

Almost surely, 2^808030199025 is an apocalyptic number.

808030199025 is the 898905-th square number.

808030199025 is the 449453-rd centered octagonal number.

It is an amenable number.

808030199025 is an abundant number, since it is smaller than the sum of its proper divisors (881734838234).

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

808030199025 is an frugal number, since it uses more digits than its factorization.

808030199025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490 (or 1238 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 808030199025 in words is "eight hundred eight billion, thirty million, one hundred ninety-nine thousand, twenty-five".