25020054517 has 2 divisors, whose sum is σ = 25020054518. Its totient is φ = 25020054516.

The previous prime is 25020054491. The next prime is 25020054547. The reversal of 25020054517 is 71545002052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24323833521 + 696220996 = 155961^2 + 26386^2 .

It is a cyclic number.

It is not a de Polignac number, because 25020054517 - 2¹⁵ = 25020021749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25020054547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12510027258 + 12510027259.

It is an arithmetic number, because the mean of its divisors is an integer number (12510027259).

Almost surely, 2^25020054517 is an apocalyptic number.

It is an amenable number.

25020054517 is a deficient number, since it is larger than the sum of its proper divisors (1).

25020054517 is an equidigital number, since it uses as much as digits as its factorization.

25020054517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 31.

Adding to 25020054517 its reverse (71545002052), we get a palindrome (96565056569).

The spelling of 25020054517 in words is "twenty-five billion, twenty million, fifty-four thousand, five hundred seventeen".