1231142025526 has 64 divisors (see below), whose sum is σ = 2248336126080. Its totient is φ = 494338360320.

The previous prime is 1231142025523. The next prime is 1231142025541. The reversal of 1231142025526 is 6255202411321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1231142025491 and 1231142025500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231142025523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5493346 + ... + 5713066.

It is an arithmetic number, because the mean of its divisors is an integer number (35130251970).

Almost surely, 2^{1231142025526} is an apocalyptic number.

1231142025526 is a deficient number, since it is larger than the sum of its proper divisors (1017194100554).

1231142025526 is a wasteful number, since it uses less digits than its factorization.

1231142025526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220169.

The product of its (nonzero) digits is 28800, while the sum is 34.

Adding to 1231142025526 its reverse (6255202411321), we get a palindrome (7486344436847).

The spelling of 1231142025526 in words is "one trillion, two hundred thirty-one billion, one hundred forty-two million, twenty-five thousand, five hundred twenty-six".