1253212356 has 24 divisors (see below), whose sum is σ = 3189995424. Its totient is φ = 379761280.

The previous prime is 1253212327. The next prime is 1253212357. The reversal of 1253212356 is 6532123521.

It is not an unprimeable number, because it can be changed into a prime (1253212357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4746885 + ... + 4747148.

It is an arithmetic number, because the mean of its divisors is an integer number (132916476).

Almost surely, 2^1253212356 is an apocalyptic number.

It is an amenable number.

1253212356 is an abundant number, since it is smaller than the sum of its proper divisors (1936783068).

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

1253212356 is a wasteful number, since it uses less digits than its factorization.

1253212356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9494051 (or 9494049 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 1253212356 is about 35400.7394838017. The cubic root of 1253212356 is about 1078.1393304947.

Adding to 1253212356 its reverse (6532123521), we get a palindrome (7785335877).

The spelling of 1253212356 in words is "one billion, two hundred fifty-three million, two hundred twelve thousand, three hundred fifty-six".