2025128317 has 2 divisors, whose sum is σ = 2025128318. Its totient is φ = 2025128316.

The previous prime is 2025128309. The next prime is 2025128323. The reversal of 2025128317 is 7138215202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1846077156 + 179051161 = 42966^2 + 13381^2 .

It is a cyclic number.

It is not a de Polignac number, because 2025128317 - 2³ = 2025128309 is a prime.

It is a super-2 number, since 2×2025128317² = 8202289400630504978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2025128617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012564158 + 1012564159.

It is an arithmetic number, because the mean of its divisors is an integer number (1012564159).

Almost surely, 2^2025128317 is an apocalyptic number.

It is an amenable number.

2025128317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2025128317 is an equidigital number, since it uses as much as digits as its factorization.

2025128317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 2025128317 is about 45001.4257218591. The cubic root of 2025128317 is about 1265.1757200424.

The spelling of 2025128317 in words is "two billion, twenty-five million, one hundred twenty-eight thousand, three hundred seventeen".