9404679557025 has 135 divisors (see below), whose sum is σ = 18217219688899. Its totient is φ = 4796130350880.

The previous prime is 9404679556907. The next prime is 9404679557033. The reversal of 9404679557025 is 5207559764049.

The square root of 9404679557025 is 3066705.

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

9404679557025 is a `hidden beast` number, since 9 + 4 + 0 + 4 + 6 + 79 + 557 + 0 + 2 + 5 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3385684640529 + 6018994916496 = 1840023^2 + 2453364^2 .

It is a tau number, because it is divible by the number of its divisors (135).

It is not a de Polignac number, because 9404679557025 - 2⁹ = 9404679556513 is a prime.

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, 3174038194 + ... + 3174041156.

Almost surely, 2^{9404679557025} is an apocalyptic number.

9404679557025 is the 3066705-th square number.

9404679557025 is the 1533353-rd centered octagonal number.

It is an amenable number.

9404679557025 is a deficient number, since it is larger than the sum of its proper divisors (8812540131874).

9404679557025 is an frugal number, since it uses more digits than its factorization.

9404679557025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5994 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 95256000, while the sum is 63.

The spelling of 9404679557025 in words is "nine trillion, four hundred four billion, six hundred seventy-nine million, five hundred fifty-seven thousand, twenty-five".