13540250000 has 140 divisors (see below), whose sum is σ = 33617616564. Its totient is φ = 5280000000.

The previous prime is 13540249999. The next prime is 13540250033. The reversal of 13540250000 is 5204531.

It can be written as a sum of positive squares in 14 ways, for example, as 10946181376 + 2594068624 = 104624^2 + 50932^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 10249340 + ... + 10250660.

Almost surely, 2^13540250000 is an apocalyptic number.

13540250000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13540250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16808808282).

13540250000 is an abundant number, since it is smaller than the sum of its proper divisors (20077366564).

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

13540250000 is an frugal number, since it uses more digits than its factorization.

13540250000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400 (or 1369 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

Adding to 13540250000 its reverse (5204531), we get a palindrome (13545454531).

The spelling of 13540250000 in words is "thirteen billion, five hundred forty million, two hundred fifty thousand".