25151206117 has 2 divisors, whose sum is σ = 25151206118. Its totient is φ = 25151206116.

The previous prime is 25151206081. The next prime is 25151206133. The reversal of 25151206117 is 71160215152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20014043841 + 5137162276 = 141471^2 + 71674^2 .

It is a cyclic number.

It is not a de Polignac number, because 25151206117 - 2¹¹ = 25151204069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25151206147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12575603058 + 12575603059.

It is an arithmetic number, because the mean of its divisors is an integer number (12575603059).

Almost surely, 2^25151206117 is an apocalyptic number.

It is an amenable number.

25151206117 is a deficient number, since it is larger than the sum of its proper divisors (1).

25151206117 is an equidigital number, since it uses as much as digits as its factorization.

25151206117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 25151206117 in words is "twenty-five billion, one hundred fifty-one million, two hundred six thousand, one hundred seventeen".