13250705140 has 24 divisors (see below), whose sum is σ = 27835171560. Its totient is φ = 5298626688.

The previous prime is 13250705123. The next prime is 13250705141. The reversal of 13250705140 is 4150705231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6337115236 + 6913589904 = 79606^2 + 83148^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13250705099 and 13250705108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13250705141) 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, 36775 + ... + 166894.

It is an arithmetic number, because the mean of its divisors is an integer number (1159798815).

Almost surely, 2^13250705140 is an apocalyptic number.

13250705140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13250705140 is an abundant number, since it is smaller than the sum of its proper divisors (14584466420).

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

13250705140 is a wasteful number, since it uses less digits than its factorization.

13250705140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206931 (or 206929 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

Subtracting from 13250705140 its reverse (4150705231), we obtain a palindrome (9099999909).

The spelling of 13250705140 in words is "thirteen billion, two hundred fifty million, seven hundred five thousand, one hundred forty".