1505145220 has 12 divisors (see below), whose sum is σ = 3160805004. Its totient is φ = 602058080.

The previous prime is 1505145193. The next prime is 1505145221. The reversal of 1505145220 is 225415051.

It can be written as a sum of positive squares in 2 ways, for example, as 335915584 + 1169229636 = 18328^2 + 34194^2 .

It is not an unprimeable number, because it can be changed into a prime (1505145221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37628611 + ... + 37628650.

It is an arithmetic number, because the mean of its divisors is an integer number (263400417).

Almost surely, 2^1505145220 is an apocalyptic number.

1505145220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1505145220 is an abundant number, since it is smaller than the sum of its proper divisors (1655659784).

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

1505145220 is a wasteful number, since it uses less digits than its factorization.

1505145220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75257270 (or 75257268 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1505145220 is about 38796.2011026853. The cubic root of 1505145220 is about 1146.0215948019.

The spelling of 1505145220 in words is "one billion, five hundred five million, one hundred forty-five thousand, two hundred twenty".