8725889618 has 4 divisors (see below), whose sum is σ = 13088834430. Its totient is φ = 4362944808.

The previous prime is 8725889603. The next prime is 8725889629. The reversal of 8725889618 is 8169885278.

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

It can be written as a sum of positive squares in only one way, i.e., 5740032169 + 2985857449 = 75763^2 + 54643^2 .

It is a super-2 number, since 2×8725889618² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2181472403 + ... + 2181472406.

Almost surely, 2^8725889618 is an apocalyptic number.

8725889618 is a deficient number, since it is larger than the sum of its proper divisors (4362944812).

8725889618 is a wasteful number, since it uses less digits than its factorization.

8725889618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362944811.

The product of its digits is 15482880, while the sum is 62.

The square root of 8725889618 is about 93412.4703559434. The cubic root of 8725889618 is about 2058.7482276298.

The spelling of 8725889618 in words is "eight billion, seven hundred twenty-five million, eight hundred eighty-nine thousand, six hundred eighteen".