1253305400 has 24 divisors (see below), whose sum is σ = 2913935520. Its totient is φ = 501322080.

The previous prime is 1253305381. The next prime is 1253305421. The reversal of 1253305400 is 45033521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3133064 + ... + 3133463.

It is an arithmetic number, because the mean of its divisors is an integer number (121413980).

Almost surely, 2^1253305400 is an apocalyptic number.

1253305400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253305400 is an abundant number, since it is smaller than the sum of its proper divisors (1660630120).

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

1253305400 is a wasteful number, since it uses less digits than its factorization.

1253305400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6266543 (or 6266534 counting only the distinct ones).

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

The square root of 1253305400 is about 35402.0536127496. The cubic root of 1253305400 is about 1078.1660117704.

Adding to 1253305400 its reverse (45033521), we get a palindrome (1298338921).

The spelling of 1253305400 in words is "one billion, two hundred fifty-three million, three hundred five thousand, four hundred".