2542500 has 90 divisors (see below), whose sum is σ = 8102094. Its totient is φ = 672000.

The previous prime is 2542483. The next prime is 2542511. The reversal of 2542500 is 52452.

2542500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 1806336 + 736164 = 1344^2 + 858^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 5.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 22444 + ... + 22556.

2^2542500 is an apocalyptic number.

2542500 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 2542500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4051047).

2542500 is an abundant number, since it is smaller than the sum of its proper divisors (5559594).

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

2542500 is a wasteful number, since it uses less digits than its factorization.

2542500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2542500 is about 1594.5218719102. The cubic root of 2542500 is about 136.4856483724.

Adding to 2542500 its reverse (52452), we get a palindrome (2594952).

The spelling of 2542500 in words is "two million, five hundred forty-two thousand, five hundred".