13725645 has 16 divisors (see below), whose sum is σ = 22429440. Its totient is φ = 7164224.

The previous prime is 13725637. The next prime is 13725659. The reversal of 13725645 is 54652731.

It is a cyclic number.

It is not a de Polignac number, because 13725645 - 2³ = 13725637 is a prime.

It is a super-3 number, since 3×13725645³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9030 + ... + 10439.

It is an arithmetic number, because the mean of its divisors is an integer number (1401840).

Almost surely, 2^13725645 is an apocalyptic number.

13725645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13725645 is a deficient number, since it is larger than the sum of its proper divisors (8703795).

13725645 is a wasteful number, since it uses less digits than its factorization.

13725645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19524.

The product of its digits is 25200, while the sum is 33.

The square root of 13725645 is about 3704.8137605013. The cubic root of 13725645 is about 239.4294607343.

The spelling of 13725645 in words is "thirteen million, seven hundred twenty-five thousand, six hundred forty-five".