1205432253 has 16 divisors (see below), whose sum is σ = 1787370240. Its totient is φ = 802926432.

The previous prime is 1205432251. The next prime is 1205432279. The reversal of 1205432253 is 3522345021.

It is a happy number.

1205432253 is a `hidden beast` number, since 1 + 205 + 432 + 25 + 3 = 666.

It is not a de Polignac number, because 1205432253 - 2¹ = 1205432251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205432251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13500 + ... + 50922.

It is an arithmetic number, because the mean of its divisors is an integer number (111710640).

Almost surely, 2^1205432253 is an apocalyptic number.

It is an amenable number.

1205432253 is a deficient number, since it is larger than the sum of its proper divisors (581937987).

1205432253 is a wasteful number, since it uses less digits than its factorization.

1205432253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38625 (or 38619 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1205432253 is about 34719.3354343081. The cubic root of 1205432253 is about 1064.2596640098.

Adding to 1205432253 its reverse (3522345021), we get a palindrome (4727777274).

The spelling of 1205432253 in words is "one billion, two hundred five million, four hundred thirty-two thousand, two hundred fifty-three".