2025128291 has 2 divisors, whose sum is σ = 2025128292. Its totient is φ = 2025128290.

The previous prime is 2025128279. The next prime is 2025128297. The reversal of 2025128291 is 1928215202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2025128291 is a prime.

It is a super-2 number, since 2×2025128291² = 8202289190017161362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2025128297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012564145 + 1012564146.

It is an arithmetic number, because the mean of its divisors is an integer number (1012564146).

Almost surely, 2^2025128291 is an apocalyptic number.

2025128291 is a deficient number, since it is larger than the sum of its proper divisors (1).

2025128291 is an equidigital number, since it uses as much as digits as its factorization.

2025128291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2025128291 is about 45001.4254329793. The cubic root of 2025128291 is about 1265.1757146280.

The spelling of 2025128291 in words is "two billion, twenty-five million, one hundred twenty-eight thousand, two hundred ninety-one".