1205264253 has 4 divisors (see below), whose sum is σ = 1607019008. Its totient is φ = 803509500.

The previous prime is 1205264251. The next prime is 1205264257. The reversal of 1205264253 is 3524625021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1205264253 - 2¹ = 1205264251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1205264253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205264251) 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, 200877373 + ... + 200877378.

It is an arithmetic number, because the mean of its divisors is an integer number (401754752).

Almost surely, 2^1205264253 is an apocalyptic number.

It is an amenable number.

1205264253 is a deficient number, since it is larger than the sum of its proper divisors (401754755).

1205264253 is an equidigital number, since it uses as much as digits as its factorization.

1205264253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401754754.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1205264253 is about 34716.9159488570. The cubic root of 1205264253 is about 1064.2102200780.

Adding to 1205264253 its reverse (3524625021), we get a palindrome (4729889274).

The spelling of 1205264253 in words is "one billion, two hundred five million, two hundred sixty-four thousand, two hundred fifty-three".