9918154625 has 16 divisors (see below), whose sum is σ = 12388418640. Its totient is φ = 7927753600.

The previous prime is 9918154613. The next prime is 9918154633. The reversal of 9918154625 is 5264518199.

It can be written as a sum of positive squares in 8 ways, for example, as 1512198769 + 8405955856 = 38887^2 + 91684^2 .

It is not a de Polignac number, because 9918154625 - 2²⁶ = 9851045761 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115871 + ... + 182379.

It is an arithmetic number, because the mean of its divisors is an integer number (774276165).

Almost surely, 2^9918154625 is an apocalyptic number.

It is an amenable number.

9918154625 is a deficient number, since it is larger than the sum of its proper divisors (2470264015).

9918154625 is a wasteful number, since it uses less digits than its factorization.

9918154625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67717 (or 67707 counting only the distinct ones).

The product of its digits is 777600, while the sum is 50.

The square root of 9918154625 is about 99589.9323476023. The cubic root of 9918154625 is about 2148.5408975075.

The spelling of 9918154625 in words is "nine billion, nine hundred eighteen million, one hundred fifty-four thousand, six hundred twenty-five".