11525534129973 has 4 divisors (see below), whose sum is σ = 15367378839968. Its totient is φ = 7683689419980.

The previous prime is 11525534129969. The next prime is 11525534129981. The reversal of 11525534129973 is 37992143552511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11525534129973 - 2² = 11525534129969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11525534129953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920922354993 + ... + 1920922354998.

It is an arithmetic number, because the mean of its divisors is an integer number (3841844709992).

Almost surely, 2^{11525534129973} is an apocalyptic number.

It is an amenable number.

11525534129973 is a deficient number, since it is larger than the sum of its proper divisors (3841844709995).

11525534129973 is an equidigital number, since it uses as much as digits as its factorization.

11525534129973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841844709994.

The product of its digits is 10206000, while the sum is 57.

The spelling of 11525534129973 in words is "eleven trillion, five hundred twenty-five billion, five hundred thirty-four million, one hundred twenty-nine thousand, nine hundred seventy-three".