1253203520 has 224 divisors, whose sum is σ = 3325977600. Its totient is φ = 447897600.

The previous prime is 1253203513. The next prime is 1253203529. The reversal of 1253203520 is 253023521.

It is not an unprimeable number, because it can be changed into a prime (1253203529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11497226 + ... + 11497334.

Almost surely, 2^1253203520 is an apocalyptic number.

1253203520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1253203520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1662988800).

1253203520 is an abundant number, since it is smaller than the sum of its proper divisors (2072774080).

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

1253203520 is a wasteful number, since it uses less digits than its factorization.

1253203520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 1253203520 is about 35400.6146839289. The cubic root of 1253203520 is about 1078.1367966167.

The spelling of 1253203520 in words is "one billion, two hundred fifty-three million, two hundred three thousand, five hundred twenty".