1233443421425 has 48 divisors (see below), whose sum is σ = 1562595813360. Its totient is φ = 965614141440.

The previous prime is 1233443421407. The next prime is 1233443421473. The reversal of 1233443421425 is 5241243443321.

It is a happy number.

It can be written as a sum of positive squares in 24 ways, for example, as 1211886134449 + 21557286976 = 1100857^2 + 146824^2 .

It is not a de Polignac number, because 1233443421425 - 2²⁶ = 1233376312561 is a prime.

It is a super-2 number, since 2×1233443421425² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 221481041 + ... + 221486609.

It is an arithmetic number, because the mean of its divisors is an integer number (32554079445).

Almost surely, 2^{1233443421425} is an apocalyptic number.

It is an amenable number.

1233443421425 is a deficient number, since it is larger than the sum of its proper divisors (329152391935).

1233443421425 is a wasteful number, since it uses less digits than its factorization.

1233443421425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6582 (or 6577 counting only the distinct ones).

The product of its digits is 276480, while the sum is 38.

Adding to 1233443421425 its reverse (5241243443321), we get a palindrome (6474686864746).

The spelling of 1233443421425 in words is "one trillion, two hundred thirty-three billion, four hundred forty-three million, four hundred twenty-one thousand, four hundred twenty-five".