2503665220 has 48 divisors (see below), whose sum is σ = 6052072320. Its totient is φ = 852217344.

The previous prime is 2503665217. The next prime is 2503665221. The reversal of 2503665220 is 225663052.

It is not an unprimeable number, because it can be changed into a prime (2503665221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44869 + ... + 83788.

It is an arithmetic number, because the mean of its divisors is an integer number (126084840).

Almost surely, 2^2503665220 is an apocalyptic number.

2503665220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2503665220 is an abundant number, since it is smaller than the sum of its proper divisors (3548407100).

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

2503665220 is a wasteful number, since it uses less digits than its factorization.

2503665220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128812 (or 128810 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 2503665220 is about 50036.6387760009. The cubic root of 2503665220 is about 1357.8717469432.

The spelling of 2503665220 in words is "two billion, five hundred three million, six hundred sixty-five thousand, two hundred twenty".