2125615 has 4 divisors (see below), whose sum is σ = 2550744. Its totient is φ = 1700488.

The previous prime is 2125603. The next prime is 2125621. The reversal of 2125615 is 5165212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2125615 - 2¹⁵ = 2092847 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212557 + ... + 212566.

It is an arithmetic number, because the mean of its divisors is an integer number (637686).

2^2125615 is an apocalyptic number.

2125615 is a deficient number, since it is larger than the sum of its proper divisors (425129).

2125615 is an equidigital number, since it uses as much as digits as its factorization.

2125615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425128.

The product of its digits is 600, while the sum is 22.

The square root of 2125615 is about 1457.9489017109. The cubic root of 2125615 is about 128.5764809890.

The spelling of 2125615 in words is "two million, one hundred twenty-five thousand, six hundred fifteen".