25434343511 has 8 divisors (see below), whose sum is σ = 26022510048. Its totient is φ = 24851700000.

The previous prime is 25434343499. The next prime is 25434343513. The reversal of 25434343511 is 11534343452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25434343511 - 2³⁰ = 24360601687 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 (25434343513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1371440 + ... + 1389861.

It is an arithmetic number, because the mean of its divisors is an integer number (3252813756).

Almost surely, 2^25434343511 is an apocalyptic number.

25434343511 is a deficient number, since it is larger than the sum of its proper divisors (588166537).

25434343511 is a wasteful number, since it uses less digits than its factorization.

25434343511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761513.

The product of its digits is 86400, while the sum is 35.

Adding to 25434343511 its reverse (11534343452), we get a palindrome (36968686963).

The spelling of 25434343511 in words is "twenty-five billion, four hundred thirty-four million, three hundred forty-three thousand, five hundred eleven".