2515254440 has 32 divisors (see below), whose sum is σ = 5841884160. Its totient is φ = 973646400.

The previous prime is 2515254421. The next prime is 2515254463. The reversal of 2515254440 is 444525152.

It is a junction number, because it is equal to n+sod(n) for n = 2515254397 and 2515254406.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012976 + ... + 1015455.

It is an arithmetic number, because the mean of its divisors is an integer number (182558880).

Almost surely, 2^2515254440 is an apocalyptic number.

2515254440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2515254440 is an abundant number, since it is smaller than the sum of its proper divisors (3326629720).

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

2515254440 is a wasteful number, since it uses less digits than its factorization.

2515254440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028473 (or 2028469 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 2515254440 is about 50152.3124092997. The cubic root of 2515254440 is about 1359.9636740586.

Adding to 2515254440 its reverse (444525152), we get a palindrome (2959779592).

The spelling of 2515254440 in words is "two billion, five hundred fifteen million, two hundred fifty-four thousand, four hundred forty".