94108721931225 has 243 divisors, whose sum is σ = 186067115688727. Its totient is φ = 47205361336320.

The previous prime is 94108721931149. The next prime is 94108721931227. The reversal of 94108721931225 is 52213912780149.

The square root of 94108721931225 is 9700965.

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

94108721931225 is a `hidden beast` number, since 9 + 4 + 10 + 87 + 219 + 312 + 25 = 666.

It can be written as a sum of positive squares in 13 ways, for example, as 87575401897929 + 6533320033296 = 9358173^2 + 2556036^2 .

It is a tau number, because it is divible by the number of its divisors (243).

It is not a de Polignac number, because 94108721931225 - 2⁷ = 94108721931097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (94108721931227) by changing a digit.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 66791143321 + ... + 66791144729.

Almost surely, 2^{94108721931225} is an apocalyptic number.

94108721931225 is the 9700965-th square number.

94108721931225 is the 4850483-rd centered octagonal number.

It is an amenable number.

94108721931225 is a deficient number, since it is larger than the sum of its proper divisors (91958393757502).

94108721931225 is an frugal number, since it uses more digits than its factorization.

94108721931225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 94108721931225 in words is "ninety-four trillion, one hundred eight billion, seven hundred twenty-one million, nine hundred thirty-one thousand, two hundred twenty-five".