2025021281 has 2 divisors, whose sum is σ = 2025021282. Its totient is φ = 2025021280.

The previous prime is 2025021263. The next prime is 2025021319. The reversal of 2025021281 is 1821205202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1996302400 + 28718881 = 44680^2 + 5359^2 .

It is a cyclic number.

It is not a de Polignac number, because 2025021281 - 2⁶ = 2025021217 is a prime.

It is a super-2 number, since 2×2025021281² = 8201422377005761922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2025021781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1012510640 + 1012510641.

It is an arithmetic number, because the mean of its divisors is an integer number (1012510641).

Almost surely, 2^2025021281 is an apocalyptic number.

It is an amenable number.

2025021281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2025021281 is an equidigital number, since it uses as much as digits as its factorization.

2025021281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 2025021281 is about 45000.2364549343. The cubic root of 2025021281 is about 1265.1534298113.

Adding to 2025021281 its reverse (1821205202), we get a palindrome (3846226483).

The spelling of 2025021281 in words is "two billion, twenty-five million, twenty-one thousand, two hundred eighty-one".