2505800 has 96 divisors (see below), whose sum is σ = 6829920. Its totient is φ = 844800.

The previous prime is 2505793. The next prime is 2505809. The reversal of 2505800 is 85052.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (2505809) 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, 37367 + ... + 37433.

It is an arithmetic number, because the mean of its divisors is an integer number (71145).

2^2505800 is an apocalyptic number.

2505800 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 2505800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3414960).

2505800 is an abundant number, since it is smaller than the sum of its proper divisors (4324120).

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

2505800 is a wasteful number, since it uses less digits than its factorization.

2505800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 2505800 is about 1582.9718885691. The cubic root of 2505800 is about 135.8257572483.

The spelling of 2505800 in words is "two million, five hundred five thousand, eight hundred".