2170425 has 24 divisors (see below), whose sum is σ = 3677344. Its totient is φ = 1128960.

The previous prime is 2170423. The next prime is 2170429. The reversal of 2170425 is 5240712.

It is not a de Polignac number, because 2170425 - 2¹ = 2170423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2889 + ... + 3561.

2^2170425 is an apocalyptic number.

2170425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2170425 is a deficient number, since it is larger than the sum of its proper divisors (1506919).

2170425 is a wasteful number, since it uses less digits than its factorization.

2170425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2170425 is about 1473.2362336027. The cubic root of 2170425 is about 129.4737105194.

The spelling of 2170425 in words is "two million, one hundred seventy thousand, four hundred twenty-five".