13545344235225 has 24 divisors (see below), whose sum is σ = 24430875422112. Its totient is φ = 6567439628800.

The previous prime is 13545344235197. The next prime is 13545344235257. The reversal of 13545344235225 is 52253244354531.

It is a happy number.

It is not a de Polignac number, because 13545344235225 - 2¹² = 13545344231129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8209298712 + ... + 8209300361.

It is an arithmetic number, because the mean of its divisors is an integer number (1017953142588).

Almost surely, 2^{13545344235225} is an apocalyptic number.

13545344235225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13545344235225 is a deficient number, since it is larger than the sum of its proper divisors (10885531186887).

13545344235225 is a wasteful number, since it uses less digits than its factorization.

13545344235225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16418599097 (or 16418599092 counting only the distinct ones).

The product of its digits is 8640000, while the sum is 48.

Adding to 13545344235225 its reverse (52253244354531), we get a palindrome (65798588589756).

The spelling of 13545344235225 in words is "thirteen trillion, five hundred forty-five billion, three hundred forty-four million, two hundred thirty-five thousand, two hundred twenty-five".