2125601 has 2 divisors, whose sum is σ = 2125602. Its totient is φ = 2125600.

The previous prime is 2125579. The next prime is 2125603. The reversal of 2125601 is 1065212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1123600 + 1002001 = 1060^2 + 1001^2 .

It is a cyclic number.

It is not a de Polignac number, because 2125601 - 2⁶ = 2125537 is a prime.

It is a super-2 number, since 2×2125601² = 9036359222402, which contains 22 as substring.

Together with 2125603, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2125601.

It is not a weakly prime, because it can be changed into another prime (2125603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062800 + 1062801.

It is an arithmetic number, because the mean of its divisors is an integer number (1062801).

2^2125601 is an apocalyptic number.

It is an amenable number.

2125601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125601 is an equidigital number, since it uses as much as digits as its factorization.

2125601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 2125601 is about 1457.9441004373. The cubic root of 2125601 is about 128.5761987060.

The spelling of 2125601 in words is "two million, one hundred twenty-five thousand, six hundred one".