2125899 has 8 divisors (see below), whose sum is σ = 3149520. Its totient is φ = 1417248.

The previous prime is 2125889. The next prime is 2125919. The reversal of 2125899 is 9985212.

It is not a de Polignac number, because 2125899 - 2⁷ = 2125771 is a prime.

It is an Ulam number.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2125819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39342 + ... + 39395.

It is an arithmetic number, because the mean of its divisors is an integer number (393690).

2^2125899 is an apocalyptic number.

2125899 is a deficient number, since it is larger than the sum of its proper divisors (1023621).

2125899 is an equidigital number, since it uses as much as digits as its factorization.

2125899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78746 (or 78740 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 2125899 is about 1458.0462955613. The cubic root of 2125899 is about 128.5822070329.

The spelling of 2125899 in words is "two million, one hundred twenty-five thousand, eight hundred ninety-nine".