9820558025 has 24 divisors (see below), whose sum is σ = 12900156480. Its totient is φ = 7395485760.

The previous prime is 9820557997. The next prime is 9820558043. The reversal of 9820558025 is 5208550289.

It is not a de Polignac number, because 9820558025 - 2¹⁶ = 9820492489 is a prime.

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, 8732 + ... + 140418.

It is an arithmetic number, because the mean of its divisors is an integer number (537506520).

Almost surely, 2^9820558025 is an apocalyptic number.

9820558025 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9820558025 is a deficient number, since it is larger than the sum of its proper divisors (3079598455).

9820558025 is a wasteful number, since it uses less digits than its factorization.

9820558025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131873 (or 131868 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 44.

The square root of 9820558025 is about 99098.7286749936. The cubic root of 9820558025 is about 2141.4702989490.

The spelling of 9820558025 in words is "nine billion, eight hundred twenty million, five hundred fifty-eight thousand, twenty-five".