1255201236 has 36 divisors (see below), whose sum is σ = 3174117492. Its totient is φ = 418235904.

The previous prime is 1255201193. The next prime is 1255201247. The reversal of 1255201236 is 6321025521.

It is a happy number.

1255201236 is a `hidden beast` number, since 12 + 5 + 520 + 123 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 693795600 + 561405636 = 26340^2 + 23694^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116260 + ... + 126596.

Almost surely, 2^1255201236 is an apocalyptic number.

It is an amenable number.

1255201236 is an abundant number, since it is smaller than the sum of its proper divisors (1918916256).

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

1255201236 is a wasteful number, since it uses less digits than its factorization.

1255201236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13720 (or 13715 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1255201236 is about 35428.8192859994. The cubic root of 1255201236 is about 1078.7093739229.

Adding to 1255201236 its reverse (6321025521), we get a palindrome (7576226757).

It can be divided in two parts, 125520 and 1236, that added together give a triangular number (126756 = T₅₀₃).

The spelling of 1255201236 in words is "one billion, two hundred fifty-five million, two hundred one thousand, two hundred thirty-six".