2515240240 has 40 divisors (see below), whose sum is σ = 5861968560. Its totient is φ = 1003681536.

The previous prime is 2515240229. The next prime is 2515240241. The reversal of 2515240240 is 420425152.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (2515240241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3999 + ... + 71038.

It is an arithmetic number, because the mean of its divisors is an integer number (146549214).

Almost surely, 2^2515240240 is an apocalyptic number.

2515240240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2515240240 is an abundant number, since it is smaller than the sum of its proper divisors (3346728320).

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

2515240240 is a wasteful number, since it uses less digits than its factorization.

2515240240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75469 (or 75463 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2515240240 is about 50152.1708403535. The cubic root of 2515240240 is about 1359.9611148052.

Adding to 2515240240 its reverse (420425152), we get a palindrome (2935665392).

The spelling of 2515240240 in words is "two billion, five hundred fifteen million, two hundred forty thousand, two hundred forty".