8025991508 has 6 divisors (see below), whose sum is σ = 14045485146. Its totient is φ = 4012995752.

The previous prime is 8025991507. The next prime is 8025991511. The reversal of 8025991508 is 8051995208.

It can be written as a sum of positive squares in only one way, i.e., 8024934724 + 1056784 = 89582^2 + 1028^2 .

It is a super-2 number, since 2×8025991508² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8025991507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003248935 + ... + 1003248942.

It is an arithmetic number, because the mean of its divisors is an integer number (2340914191).

Almost surely, 2^8025991508 is an apocalyptic number.

It is an amenable number.

8025991508 is a deficient number, since it is larger than the sum of its proper divisors (6019493638).

8025991508 is a wasteful number, since it uses less digits than its factorization.

8025991508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006497881 (or 2006497879 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 47.

The square root of 8025991508 is about 89587.8982229185. The cubic root of 8025991508 is about 2002.1636175355.

The spelling of 8025991508 in words is "eight billion, twenty-five million, nine hundred ninety-one thousand, five hundred eight".