2125011425 has 6 divisors (see below), whose sum is σ = 2635014198. Its totient is φ = 1700009120.

The previous prime is 2125011403. The next prime is 2125011457. The reversal of 2125011425 is 5241105212.

It can be written as a sum of positive squares in 3 ways, for example, as 314423824 + 1810587601 = 17732^2 + 42551^2 .

It is not a de Polignac number, because 2125011425 - 2¹⁸ = 2124749281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2125011425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42500204 + ... + 42500253.

It is an arithmetic number, because the mean of its divisors is an integer number (439169033).

Almost surely, 2^2125011425 is an apocalyptic number.

2125011425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2125011425 is a deficient number, since it is larger than the sum of its proper divisors (510002773).

2125011425 is an equidigital number, since it uses as much as digits as its factorization.

2125011425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85000467 (or 85000462 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2125011425 is about 46097.8462078219. The cubic root of 2125011425 is about 1285.6430993950.

Adding to 2125011425 its reverse (5241105212), we get a palindrome (7366116637).

The spelling of 2125011425 in words is "two billion, one hundred twenty-five million, eleven thousand, four hundred twenty-five".