13625543920 has 20 divisors (see below), whose sum is σ = 31679389800. Its totient is φ = 5450217536.

The previous prime is 13625543917. The next prime is 13625543923. The reversal of 13625543920 is 2934552631.

It is an interprime number because it is at equal distance from previous prime (13625543917) and next prime (13625543923).

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13625543923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85159570 + ... + 85159729.

It is an arithmetic number, because the mean of its divisors is an integer number (1583969490).

Almost surely, 2^13625543920 is an apocalyptic number.

13625543920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13625543920 is an abundant number, since it is smaller than the sum of its proper divisors (18053845880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13625543920 is a wasteful number, since it uses less digits than its factorization.

13625543920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170319312 (or 170319306 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 13625543920 in words is "thirteen billion, six hundred twenty-five million, five hundred forty-three thousand, nine hundred twenty".