1234553125531 has 16 divisors (see below), whose sum is σ = 1351585051488. Its totient is φ = 1118323814400.

The previous prime is 1234553125409. The next prime is 1234553125549. The reversal of 1234553125531 is 1355213554321.

It is a cyclic number.

It is not a de Polignac number, because 1234553125531 - 2¹¹ = 1234553123483 is a prime.

It is a super-2 number, since 2×1234553125531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1234553125831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9496651 + ... + 9625771.

It is an arithmetic number, because the mean of its divisors is an integer number (84474065718).

Almost surely, 2^{1234553125531} is an apocalyptic number.

1234553125531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1234553125531 is a deficient number, since it is larger than the sum of its proper divisors (117031925957).

1234553125531 is a wasteful number, since it uses less digits than its factorization.

1234553125531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132222.

The product of its digits is 270000, while the sum is 40.

Adding to 1234553125531 its reverse (1355213554321), we get a palindrome (2589766679852).

The spelling of 1234553125531 in words is "one trillion, two hundred thirty-four billion, five hundred fifty-three million, one hundred twenty-five thousand, five hundred thirty-one".