13525140 has 48 divisors (see below), whose sum is σ = 38118528. Its totient is φ = 3583104.

The previous prime is 13525133. The next prime is 13525147. The reversal of 13525140 is 4152531.

It is an interprime number because it is at equal distance from previous prime (13525133) and next prime (13525147).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13525147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9729 + ... + 11031.

It is an arithmetic number, because the mean of its divisors is an integer number (794136).

Almost surely, 2^13525140 is an apocalyptic number.

13525140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13525140 is an abundant number, since it is smaller than the sum of its proper divisors (24593388).

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

13525140 is a wasteful number, since it uses less digits than its factorization.

13525140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1486 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 13525140 is about 3677.6541436084. The cubic root of 13525140 is about 238.2578708174.

Adding to 13525140 its reverse (4152531), we get a palindrome (17677671).

The spelling of 13525140 in words is "thirteen million, five hundred twenty-five thousand, one hundred forty".