9618940415025 has 36 divisors (see below), whose sum is σ = 17229141082972. Its totient is φ = 5129937774720.

The previous prime is 9618940414991. The next prime is 9618940415027. The reversal of 9618940415025 is 5205140498169.

9618940415025 is a `hidden beast` number, since 9 + 6 + 1 + 8 + 94 + 0 + 41 + 502 + 5 = 666.

9618940415025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 342182881296 + 9276757533729 = 584964^2 + 3045777^2 .

It is not a de Polignac number, because 9618940415025 - 2¹⁹ = 9618939890737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9618940415027) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6550947 + ... + 7883703.

Almost surely, 2^{9618940415025} is an apocalyptic number.

It is an amenable number.

9618940415025 is a deficient number, since it is larger than the sum of its proper divisors (7610200667947).

9618940415025 is a wasteful number, since it uses less digits than its factorization.

9618940415025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364850 (or 1364842 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 9618940415025 in words is "nine trillion, six hundred eighteen billion, nine hundred forty million, four hundred fifteen thousand, twenty-five".