13431433425 has 24 divisors (see below), whose sum is σ = 22238859360. Its totient is φ = 7153036800.

The previous prime is 13431433397. The next prime is 13431433427. The reversal of 13431433425 is 52433413431.

It is not a de Polignac number, because 13431433425 - 2⁶ = 13431433361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13431433427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77760 + ... + 181409.

It is an arithmetic number, because the mean of its divisors is an integer number (926619140).

Almost surely, 2^13431433425 is an apocalyptic number.

13431433425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13431433425 is a deficient number, since it is larger than the sum of its proper divisors (8807425935).

13431433425 is a wasteful number, since it uses less digits than its factorization.

13431433425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259873 (or 259868 counting only the distinct ones).

The product of its digits is 51840, while the sum is 33.

Adding to 13431433425 its reverse (52433413431), we get a palindrome (65864846856).

The spelling of 13431433425 in words is "thirteen billion, four hundred thirty-one million, four hundred thirty-three thousand, four hundred twenty-five".