13525540 has 48 divisors (see below), whose sum is σ = 34376832. Its totient is φ = 4363776.

The previous prime is 13525529. The next prime is 13525543. The reversal of 13525540 is 4552531.

It is not an unprimeable number, because it can be changed into a prime (13525543) 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, 462 + ... + 5221.

It is an arithmetic number, because the mean of its divisors is an integer number (716184).

Almost surely, 2^13525540 is an apocalyptic number.

13525540 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 13525540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17188416).

13525540 is an abundant number, since it is smaller than the sum of its proper divisors (20851292).

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

13525540 is a wasteful number, since it uses less digits than its factorization.

13525540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5716 (or 5714 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 13525540 is about 3677.7085256991. The cubic root of 13525540 is about 238.2602195844.

The spelling of 13525540 in words is "thirteen million, five hundred twenty-five thousand, five hundred forty".