25284623017 has 2 divisors, whose sum is σ = 25284623018. Its totient is φ = 25284623016.

The previous prime is 25284622999. The next prime is 25284623069. The reversal of 25284623017 is 71032648252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20045179561 + 5239443456 = 141581^2 + 72384^2 .

It is a cyclic number.

It is not a de Polignac number, because 25284623017 - 2¹¹ = 25284620969 is a prime.

It is a super-2 number, since 2×25284623017² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25284621017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12642311508 + 12642311509.

It is an arithmetic number, because the mean of its divisors is an integer number (12642311509).

Almost surely, 2^25284623017 is an apocalyptic number.

It is an amenable number.

25284623017 is a deficient number, since it is larger than the sum of its proper divisors (1).

25284623017 is an equidigital number, since it uses as much as digits as its factorization.

25284623017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 25284623017 in words is "twenty-five billion, two hundred eighty-four million, six hundred twenty-three thousand, seventeen".