2515145520 has 160 divisors (see below), whose sum is σ = 8240544000. Its totient is φ = 632835072.

The previous prime is 2515145497. The next prime is 2515145527. The reversal of 2515145520 is 255415152.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2515145527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1289506 + ... + 1291454.

It is an arithmetic number, because the mean of its divisors is an integer number (51503400).

Almost surely, 2^2515145520 is an apocalyptic number.

2515145520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2515145520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4120272000).

2515145520 is an abundant number, since it is smaller than the sum of its proper divisors (5725398480).

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

2515145520 is a wasteful number, since it uses less digits than its factorization.

2515145520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2267 (or 2261 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 2515145520 is about 50151.2265054405. The cubic root of 2515145520 is about 1359.9440432571.

The spelling of 2515145520 in words is "two billion, five hundred fifteen million, one hundred forty-five thousand, five hundred twenty".