1205005272 has 16 divisors (see below), whose sum is σ = 3012513240. Its totient is φ = 401668416.

The previous prime is 1205005229. The next prime is 1205005273. The reversal of 1205005272 is 2725005021.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 50208553 = 1205005272 / (1 + 2 + 0 + 5 + 0 + 0 + 5 + 2 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205005273) 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, 25104253 + ... + 25104300.

Almost surely, 2^1205005272 is an apocalyptic number.

1205005272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1205005272 is an abundant number, since it is smaller than the sum of its proper divisors (1807507968).

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

1205005272 is a wasteful number, since it uses less digits than its factorization.

1205005272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50208562 (or 50208558 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 1205005272 is about 34713.1858520649. The cubic root of 1205005272 is about 1064.1339906068.

The spelling of 1205005272 in words is "one billion, two hundred five million, five thousand, two hundred seventy-two".