1025534042111 has 4 divisors (see below), whose sum is σ = 1032911985000. Its totient is φ = 1018156099224.

The previous prime is 1025534042107. The next prime is 1025534042171. The reversal of 1025534042111 is 1112404355201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1025534042111 - 2² = 1025534042107 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 (1025534042171) 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, 3688971236 + ... + 3688971513.

It is an arithmetic number, because the mean of its divisors is an integer number (258227996250).

Almost surely, 2^{1025534042111} is an apocalyptic number.

1025534042111 is a deficient number, since it is larger than the sum of its proper divisors (7377942889).

1025534042111 is an equidigital number, since it uses as much as digits as its factorization.

1025534042111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7377942888.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1025534042111 its reverse (1112404355201), we get a palindrome (2137938397312).

The spelling of 1025534042111 in words is "one trillion, twenty-five billion, five hundred thirty-four million, forty-two thousand, one hundred eleven".