13425434215531 has 16 divisors (see below), whose sum is σ = 15518347334784. Its totient is φ = 11503948575744.

The previous prime is 13425434215513. The next prime is 13425434215549. The reversal of 13425434215531 is 13551243452431.

It is an interprime number because it is at equal distance from previous prime (13425434215513) and next prime (13425434215549).

It is a cyclic number.

It is not a de Polignac number, because 13425434215531 - 2²⁷ = 13425299997803 is a prime.

It is a super-2 number, since 2×13425434215531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13425434215031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416069971 + ... + 416102236.

It is an arithmetic number, because the mean of its divisors is an integer number (969896708424).

Almost surely, 2^{13425434215531} is an apocalyptic number.

13425434215531 is a deficient number, since it is larger than the sum of its proper divisors (2092913119253).

13425434215531 is a wasteful number, since it uses less digits than its factorization.

13425434215531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832172310.

The product of its digits is 864000, while the sum is 43.

Adding to 13425434215531 its reverse (13551243452431), we get a palindrome (26976677667962).

The spelling of 13425434215531 in words is "thirteen trillion, four hundred twenty-five billion, four hundred thirty-four million, two hundred fifteen thousand, five hundred thirty-one".