25970100517 has 2 divisors, whose sum is σ = 25970100518. Its totient is φ = 25970100516.

The previous prime is 25970100493. The next prime is 25970100529. The reversal of 25970100517 is 71500107952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15598511236 + 10371589281 = 124894^2 + 101841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25970100517 is a prime.

It is a super-2 number, since 2×25970100517² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25970100017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12985050258 + 12985050259.

It is an arithmetic number, because the mean of its divisors is an integer number (12985050259).

Almost surely, 2^25970100517 is an apocalyptic number.

It is an amenable number.

25970100517 is a deficient number, since it is larger than the sum of its proper divisors (1).

25970100517 is an equidigital number, since it uses as much as digits as its factorization.

25970100517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22050, while the sum is 37.

The spelling of 25970100517 in words is "twenty-five billion, nine hundred seventy million, one hundred thousand, five hundred seventeen".