2540520245 has 8 divisors (see below), whose sum is σ = 3049543680. Its totient is φ = 2031803280.

The previous prime is 2540520221. The next prime is 2540520259. The reversal of 2540520245 is 5420250452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2540520245 - 2¹² = 2540516149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57965 + ... + 91874.

It is an arithmetic number, because the mean of its divisors is an integer number (381192960).

Almost surely, 2^2540520245 is an apocalyptic number.

It is an amenable number.

2540520245 is a deficient number, since it is larger than the sum of its proper divisors (509023435).

2540520245 is a wasteful number, since it uses less digits than its factorization.

2540520245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153235.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 2540520245 is about 50403.5737324250. The cubic root of 2540520245 is about 1364.5021365471.

Adding to 2540520245 its reverse (5420250452), we get a palindrome (7960770697).

The spelling of 2540520245 in words is "two billion, five hundred forty million, five hundred twenty thousand, two hundred forty-five".