1231152035225 has 24 divisors (see below), whose sum is σ = 1745545325568. Its totient is φ = 843818371200.

The previous prime is 1231152035159. The next prime is 1231152035297. The reversal of 1231152035225 is 5225302511321.

It is a de Polignac number, because none of the positive numbers 2^k-1231152035225 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231152035191 and 1231152035200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1296884 + ... + 2035733.

It is an arithmetic number, because the mean of its divisors is an integer number (72731055232).

Almost surely, 2^{1231152035225} is an apocalyptic number.

It is an amenable number.

1231152035225 is a deficient number, since it is larger than the sum of its proper divisors (514393290343).

1231152035225 is a wasteful number, since it uses less digits than its factorization.

1231152035225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334745 (or 3334740 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 1231152035225 its reverse (5225302511321), we get a palindrome (6456454546546).

The spelling of 1231152035225 in words is "one trillion, two hundred thirty-one billion, one hundred fifty-two million, thirty-five thousand, two hundred twenty-five".