2180525 has 6 divisors (see below), whose sum is σ = 2703882. Its totient is φ = 1744400.

The previous prime is 2180501. The next prime is 2180527. The reversal of 2180525 is 5250812.

It can be written as a sum of positive squares in 3 ways, for example, as 687241 + 1493284 = 829^2 + 1222^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2180525 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2180525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43586 + ... + 43635.

It is an arithmetic number, because the mean of its divisors is an integer number (450647).

2^2180525 is an apocalyptic number.

2180525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2180525 is a deficient number, since it is larger than the sum of its proper divisors (523357).

2180525 is an equidigital number, since it uses as much as digits as its factorization.

2180525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87231 (or 87226 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2180525 is about 1476.6600827543. The cubic root of 2180525 is about 129.6742336553.

The spelling of 2180525 in words is "two million, one hundred eighty thousand, five hundred twenty-five".