1253243555000 has 80 divisors (see below), whose sum is σ = 3037603437000. Its totient is φ = 484011248000.

The previous prime is 1253243554943. The next prime is 1253243555017. The reversal of 1253243555000 is 5553423521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4176530 + ... + 4466529.

Almost surely, 2^{1253243555000} is an apocalyptic number.

1253243555000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253243555000 is an abundant number, since it is smaller than the sum of its proper divisors (1784359882000).

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

1253243555000 is an equidigital number, since it uses as much as digits as its factorization.

1253243555000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8643114 (or 8643095 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 1253243555000 its reverse (5553423521), we get a palindrome (1258796978521).

The spelling of 1253243555000 in words is "one trillion, two hundred fifty-three billion, two hundred forty-three million, five hundred fifty-five thousand".