2540215415 has 24 divisors (see below), whose sum is σ = 3193076160. Its totient is φ = 1937695424.

The previous prime is 2540215397. The next prime is 2540215451. The reversal of 2540215415 is 5145120452.

It is not a de Polignac number, because 2540215415 - 2⁸ = 2540215159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 997634 + ... + 1000176.

It is an arithmetic number, because the mean of its divisors is an integer number (133044840).

Almost surely, 2^2540215415 is an apocalyptic number.

2540215415 is a deficient number, since it is larger than the sum of its proper divisors (652860745).

2540215415 is an equidigital number, since it uses as much as digits as its factorization.

2540215415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743 (or 2660 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 2540215415 is about 50400.5497489859. The cubic root of 2540215415 is about 1364.4475600846.

Adding to 2540215415 its reverse (5145120452), we get a palindrome (7685335867).

The spelling of 2540215415 in words is "two billion, five hundred forty million, two hundred fifteen thousand, four hundred fifteen".