2125420250449 has 2 divisors, whose sum is σ = 2125420250450. Its totient is φ = 2125420250448.

The previous prime is 2125420250413. The next prime is 2125420250483. The reversal of 2125420250449 is 9440520245212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1676359436049 + 449060814400 = 1294743^2 + 670120^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125420250449 - 2¹⁷ = 2125420119377 is a prime.

It is a super-2 number, since 2×2125420250449² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2125420254449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062710125224 + 1062710125225.

It is an arithmetic number, because the mean of its divisors is an integer number (1062710125225).

Almost surely, 2^{2125420250449} is an apocalyptic number.

It is an amenable number.

2125420250449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125420250449 is an equidigital number, since it uses as much as digits as its factorization.

2125420250449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 40.

The spelling of 2125420250449 in words is "two trillion, one hundred twenty-five billion, four hundred twenty million, two hundred fifty thousand, four hundred forty-nine".