1205505852 has 12 divisors (see below), whose sum is σ = 2812847016. Its totient is φ = 401835280.

The previous prime is 1205505841. The next prime is 1205505869. The reversal of 1205505852 is 2585055021.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50229399 + ... + 50229422.

It is an arithmetic number, because the mean of its divisors is an integer number (234403918).

Almost surely, 2^1205505852 is an apocalyptic number.

1205505852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1205505852 is an abundant number, since it is smaller than the sum of its proper divisors (1607341164).

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

1205505852 is a wasteful number, since it uses less digits than its factorization.

1205505852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100458828 (or 100458826 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The square root of 1205505852 is about 34720.3953318507. The cubic root of 1205505852 is about 1064.2813234195.

The spelling of 1205505852 in words is "one billion, two hundred five million, five hundred five thousand, eight hundred fifty-two".