13525420 has 24 divisors (see below), whose sum is σ = 28476000. Its totient is φ = 5396352.

The previous prime is 13525411. The next prime is 13525453. The reversal of 13525420 is 2452531.

13525420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13525391 and 13525400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11416 + ... + 12544.

It is an arithmetic number, because the mean of its divisors is an integer number (1186500).

Almost surely, 2^13525420 is an apocalyptic number.

13525420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13525420 is an abundant number, since it is smaller than the sum of its proper divisors (14950580).

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

13525420 is a wasteful number, since it uses less digits than its factorization.

13525420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 13525420 is about 3677.6922111563. The cubic root of 13525420 is about 238.2595149592.

Adding to 13525420 its reverse (2452531), we get a palindrome (15977951).

The spelling of 13525420 in words is "thirteen million, five hundred twenty-five thousand, four hundred twenty".