2125819 has 2 divisors, whose sum is σ = 2125820. Its totient is φ = 2125818.

The previous prime is 2125813. The next prime is 2125831. The reversal of 2125819 is 9185212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2125819 - 2⁷ = 2125691 is a prime.

It is a super-2 number, since 2×2125819² = 9038212841522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2125813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062909 + 1062910.

It is an arithmetic number, because the mean of its divisors is an integer number (1062910).

2^2125819 is an apocalyptic number.

2125819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2125819 is an equidigital number, since it uses as much as digits as its factorization.

2125819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 28.

The square root of 2125819 is about 1458.0188613320. The cubic root of 2125819 is about 128.5805941144.

The spelling of 2125819 in words is "two million, one hundred twenty-five thousand, eight hundred nineteen".