2159425 has 12 divisors (see below), whose sum is σ = 2835756. Its totient is φ = 1625600.

The previous prime is 2159419. The next prime is 2159449. The reversal of 2159425 is 5249512.

It can be written as a sum of positive squares in 6 ways, for example, as 82944 + 2076481 = 288^2 + 1441^2 .

It is not a de Polignac number, because 2159425 - 2²¹ = 62273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2159393 and 2159402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2116 + ... + 2965.

It is an arithmetic number, because the mean of its divisors is an integer number (236313).

2^2159425 is an apocalyptic number.

2159425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2159425 is a deficient number, since it is larger than the sum of its proper divisors (676331).

2159425 is a wasteful number, since it uses less digits than its factorization.

2159425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108 (or 5103 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 2159425 is about 1469.4982136770. The cubic root of 2159425 is about 129.2546100141.

The spelling of 2159425 in words is "two million, one hundred fifty-nine thousand, four hundred twenty-five".