2605000 has 40 divisors (see below), whose sum is σ = 6115230. Its totient is φ = 1040000.

The previous prime is 2604997. The next prime is 2605007. The reversal of 2605000 is 5062.

It can be written as a sum of positive squares in 5 ways, for example, as 4 + 2604996 = 2^2 + 1614^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2605007) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4740 + ... + 5260.

2^2605000 is an apocalyptic number.

2605000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2605000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3057615).

2605000 is an abundant number, since it is smaller than the sum of its proper divisors (3510230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2605000 is an equidigital number, since it uses as much as digits as its factorization.

2605000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 2605000 is about 1614.0012391569. The cubic root of 2605000 is about 137.5949757044.

It can be divided in two parts, 2 and 605000, that multiplied together give a square (1210000 = 1100²).

The spelling of 2605000 in words is "two million, six hundred five thousand".