25151516701 has 2 divisors, whose sum is σ = 25151516702. Its totient is φ = 25151516700.

The previous prime is 25151516683. The next prime is 25151516713. The reversal of 25151516701 is 10761515152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21905480025 + 3246036676 = 148005^2 + 56974^2 .

It is a cyclic number.

It is not a de Polignac number, because 25151516701 - 2⁹ = 25151516189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25151517701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12575758350 + 12575758351.

It is an arithmetic number, because the mean of its divisors is an integer number (12575758351).

Almost surely, 2^25151516701 is an apocalyptic number.

It is an amenable number.

25151516701 is a deficient number, since it is larger than the sum of its proper divisors (1).

25151516701 is an equidigital number, since it uses as much as digits as its factorization.

25151516701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10500, while the sum is 34.

The spelling of 25151516701 in words is "twenty-five billion, one hundred fifty-one million, five hundred sixteen thousand, seven hundred one".