2455145220 has 96 divisors (see below), whose sum is σ = 7758011520. Its totient is φ = 574658560.

The previous prime is 2455145207. The next prime is 2455145261. The reversal of 2455145220 is 225415542.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44997 + ... + 83276.

It is an arithmetic number, because the mean of its divisors is an integer number (80812620).

Almost surely, 2^2455145220 is an apocalyptic number.

2455145220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2455145220 is an abundant number, since it is smaller than the sum of its proper divisors (5302866300).

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

2455145220 is a wasteful number, since it uses less digits than its factorization.

2455145220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128325 (or 128323 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 2455145220 is about 49549.4219946106. The cubic root of 2455145220 is about 1349.0428002084.

The spelling of 2455145220 in words is "two billion, four hundred fifty-five million, one hundred forty-five thousand, two hundred twenty".