1231502542025 has 24 divisors (see below), whose sum is σ = 1746693067584. Its totient is φ = 843743707200.

The previous prime is 1231502541979. The next prime is 1231502542027. The reversal of 1231502542025 is 5202452051321.

It is not a de Polignac number, because 1231502542025 - 2¹⁶ = 1231502476489 is a prime.

It is a super-2 number, since 2×1231502542025² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231502541982 and 1231502542000.

It is not an unprimeable number, because it can be changed into a prime (1231502542027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2772647 + ... + 3185996.

It is an arithmetic number, because the mean of its divisors is an integer number (72778877816).

Almost surely, 2^{1231502542025} is an apocalyptic number.

It is an amenable number.

1231502542025 is a deficient number, since it is larger than the sum of its proper divisors (515190525559).

1231502542025 is a wasteful number, since it uses less digits than its factorization.

1231502542025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959841 (or 5959836 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 1231502542025 its reverse (5202452051321), we get a palindrome (6433954593346).

The spelling of 1231502542025 in words is "one trillion, two hundred thirty-one billion, five hundred two million, five hundred forty-two thousand, twenty-five".