13725765 has 12 divisors (see below), whose sum is σ = 23791404.
Its totient is φ = 7320384.
The previous prime is 13725763. The next prime is 13725769. The reversal of 13725765 is 56752731.
13725765 is a `hidden beast` number, since 13 + 72 + 576 + 5 = 666.
13725765 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 2 ways, for example, as 2556801 + 11168964 = 1599^2 + 3342^2
It is not a de Polignac number, because 13725765 - 21 = 13725763 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (13725763) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 152464 + ... + 152553.
It is an arithmetic number, because the mean of its divisors is an integer number (1982617).
Almost surely, 213725765 is an apocalyptic number.
13725765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
13725765 is a deficient number, since it is larger than the sum of its proper divisors (10065639).
13725765 is a wasteful number, since it uses less digits than its factorization.
13725765 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 305028 (or 305025 counting only the distinct ones).
The product of its digits is 44100, while the sum is 36.
The square root of 13725765 is about 3704.8299556120.
The cubic root of 13725765 is about 239.4301584902.
The spelling of 13725765 in words is "thirteen million, seven hundred twenty-five thousand, seven hundred sixty-five".