2125616 has 10 divisors (see below), whose sum is σ = 4118412. Its totient is φ = 1062800.

The previous prime is 2125603. The next prime is 2125621. The reversal of 2125616 is 6165212.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 2125591 and 2125600.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66410 + ... + 66441.

2^2125616 is an apocalyptic number.

It is an amenable number.

2125616 is a deficient number, since it is larger than the sum of its proper divisors (1992796).

2125616 is a wasteful number, since it uses less digits than its factorization.

2125616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132859 (or 132853 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 2125616 is about 1457.9492446584. The cubic root of 2125616 is about 128.5765011520.

The spelling of 2125616 in words is "two million, one hundred twenty-five thousand, six hundred sixteen".