25070640717217 has 16 divisors (see below), whose sum is σ = 26904990927312. Its totient is φ = 23277933619200.

The previous prime is 25070640717169. The next prime is 25070640717229. The reversal of 25070640717217 is 71271704607052.

It can be written as a sum of positive squares in 8 ways, for example, as 2607979525776 + 22462661191441 = 1614924^2 + 4739479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25070640717217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25070640717257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25880748 + ... + 26831965.

It is an arithmetic number, because the mean of its divisors is an integer number (1681561932957).

Almost surely, 2^{25070640717217} is an apocalyptic number.

It is an amenable number.

25070640717217 is a deficient number, since it is larger than the sum of its proper divisors (1834350210095).

25070640717217 is a wasteful number, since it uses less digits than its factorization.

25070640717217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52713108.

The product of its (nonzero) digits is 1152480, while the sum is 49.

The spelling of 25070640717217 in words is "twenty-five trillion, seventy billion, six hundred forty million, seven hundred seventeen thousand, two hundred seventeen".