1253505012 has 24 divisors (see below), whose sum is σ = 3078784800. Its totient is φ = 395843616.

The previous prime is 1253505007. The next prime is 1253505017. The reversal of 1253505012 is 2105053521.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1253505007) and next prime (1253505017).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253505017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2748687 + ... + 2749142.

It is an arithmetic number, because the mean of its divisors is an integer number (128282700).

Almost surely, 2^1253505012 is an apocalyptic number.

1253505012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1253505012 is an abundant number, since it is smaller than the sum of its proper divisors (1825279788).

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

1253505012 is a wasteful number, since it uses less digits than its factorization.

1253505012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497855 (or 5497853 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 1253505012 is about 35404.8727154893. The cubic root of 1253505012 is about 1078.2232480060.

Adding to 1253505012 its reverse (2105053521), we get a palindrome (3358558533).

The spelling of 1253505012 in words is "one billion, two hundred fifty-three million, five hundred five thousand, twelve".