13555440125 has 8 divisors (see below), whose sum is σ = 16917189432. Its totient is φ = 10844352000.

The previous prime is 13555440097. The next prime is 13555440133. The reversal of 13555440125 is 52104455531.

It can be written as a sum of positive squares in 4 ways, for example, as 1795555876 + 11759884249 = 42374^2 + 108443^2 .

It is not a de Polignac number, because 13555440125 - 2¹² = 13555436029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54221636 + ... + 54221885.

It is an arithmetic number, because the mean of its divisors is an integer number (2114648679).

Almost surely, 2^13555440125 is an apocalyptic number.

It is an amenable number.

13555440125 is a deficient number, since it is larger than the sum of its proper divisors (3361749307).

13555440125 is an equidigital number, since it uses as much as digits as its factorization.

13555440125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108443536 (or 108443526 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 35.

Adding to 13555440125 its reverse (52104455531), we get a palindrome (65659895656).

The spelling of 13555440125 in words is "thirteen billion, five hundred fifty-five million, four hundred forty thousand, one hundred twenty-five".