1234553125530 has 128 divisors (see below), whose sum is σ = 3225699479808. Its totient is φ = 301128855552.

The previous prime is 1234553125409. The next prime is 1234553125549. The reversal of 1234553125530 is 355213554321.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16625164 + ... + 16699256.

It is an arithmetic number, because the mean of its divisors is an integer number (25200777186).

Almost surely, 2^{1234553125530} is an apocalyptic number.

1234553125530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1234553125530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612849739904).

1234553125530 is an abundant number, since it is smaller than the sum of its proper divisors (1991146354278).

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

1234553125530 is a wasteful number, since it uses less digits than its factorization.

1234553125530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75040.

The product of its (nonzero) digits is 270000, while the sum is 39.

Adding to 1234553125530 its reverse (355213554321), we get a palindrome (1589766679851).

The spelling of 1234553125530 in words is "one trillion, two hundred thirty-four billion, five hundred fifty-three million, one hundred twenty-five thousand, five hundred thirty".