9868519425 has 24 divisors (see below), whose sum is σ = 16400514784. Its totient is φ = 5235932160.

The previous prime is 9868519337. The next prime is 9868519433. The reversal of 9868519425 is 5249158689.

It is a happy number.

It is not a de Polignac number, because 9868519425 - 2⁸ = 9868519169 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326407 + ... + 355356.

Almost surely, 2^9868519425 is an apocalyptic number.

It is an amenable number.

9868519425 is a deficient number, since it is larger than the sum of its proper divisors (6531995359).

9868519425 is a wasteful number, since it uses less digits than its factorization.

9868519425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681969 (or 681964 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 57.

The square root of 9868519425 is about 99340.4219087074. The cubic root of 9868519425 is about 2144.9507924443.

The spelling of 9868519425 in words is "nine billion, eight hundred sixty-eight million, five hundred nineteen thousand, four hundred twenty-five".