1205253172 has 12 divisors (see below), whose sum is σ = 2110260096. Its totient is φ = 602321720.

The previous prime is 1205253169. The next prime is 1205253191. The reversal of 1205253172 is 2713525021.

It is a super-3 number, since 3×1205253172³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1205253172.

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, 67204 + ... + 83227.

It is an arithmetic number, because the mean of its divisors is an integer number (175855008).

Almost surely, 2^1205253172 is an apocalyptic number.

It is an amenable number.

1205253172 is a deficient number, since it is larger than the sum of its proper divisors (905006924).

1205253172 is a wasteful number, since it uses less digits than its factorization.

1205253172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152438 (or 152436 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1205253172 is about 34716.7563577014. The cubic root of 1205253172 is about 1064.2069586772.

Adding to 1205253172 its reverse (2713525021), we get a palindrome (3918778193).

The spelling of 1205253172 in words is "one billion, two hundred five million, two hundred fifty-three thousand, one hundred seventy-two".