2543425 has 6 divisors (see below), whose sum is σ = 3153878. Its totient is φ = 2034720.

The previous prime is 2543423. The next prime is 2543441. The reversal of 2543425 is 5243452.

2543425 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 3 ways, for example, as 5776 + 2537649 = 76^2 + 1593^2 .

It is not a de Polignac number, because 2543425 - 2¹ = 2543423 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 101737 = 2543425 / (2 + 5 + 4 + 3 + 4 + 2 + 5).

It is a d-powerful number, because it can be written as 2¹³ + 5⁷ + 4 + 3⁹ + 4⁹ + 2²¹ + 5⁷ .

It is a Duffinian number.

2543425 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2543425.

It is not an unprimeable number, because it can be changed into a prime (2543423) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 50844 + ... + 50893.

2^2543425 is an apocalyptic number.

2543425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2543425 is a deficient number, since it is larger than the sum of its proper divisors (610453).

2543425 is a wasteful number, since it uses less digits than its factorization.

2543425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101747 (or 101742 counting only the distinct ones).

The product of its digits is 4800, while the sum is 25.

The square root of 2543425 is about 1594.8119011344. The cubic root of 2543425 is about 136.5021982141.

Adding to 2543425 its reverse (5243452), we get a palindrome (7786877).

The spelling of 2543425 in words is "two million, five hundred forty-three thousand, four hundred twenty-five".