2043540025 has 24 divisors (see below), whose sum is σ = 2610975744. Its totient is φ = 1585785600.

The previous prime is 2043540019. The next prime is 2043540049. The reversal of 2043540025 is 5200453402.

It is not a de Polignac number, because 2043540025 - 2³ = 2043540017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125080 + ... + 140470.

It is an arithmetic number, because the mean of its divisors is an integer number (108790656).

Almost surely, 2^2043540025 is an apocalyptic number.

2043540025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2043540025 is a deficient number, since it is larger than the sum of its proper divisors (567435719).

2043540025 is a wasteful number, since it uses less digits than its factorization.

2043540025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15561 (or 15556 counting only the distinct ones).

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

The square root of 2043540025 is about 45205.5309116042. The cubic root of 2043540025 is about 1268.9983266670.

Adding to 2043540025 its reverse (5200453402), we get a palindrome (7243993427).

The spelling of 2043540025 in words is "two billion, forty-three million, five hundred forty thousand, twenty-five".