13725889 has 2 divisors, whose sum is σ = 13725890. Its totient is φ = 13725888.

The previous prime is 13725841. The next prime is 13725911. The reversal of 13725889 is 98852731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8850625 + 4875264 = 2975^2 + 2208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13725889 is a prime.

It is not a weakly prime, because it can be changed into another prime (13725289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6862944 + 6862945.

It is an arithmetic number, because the mean of its divisors is an integer number (6862945).

Almost surely, 2^13725889 is an apocalyptic number.

It is an amenable number.

13725889 is a deficient number, since it is larger than the sum of its proper divisors (1).

13725889 is an equidigital number, since it uses as much as digits as its factorization.

13725889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 13725889 is about 3704.8466904853. The cubic root of 13725889 is about 239.4308795004.

It can be divided in two parts, 1372 and 5889, that multiplied together give a palindrome (8079708).

The spelling of 13725889 in words is "thirteen million, seven hundred twenty-five thousand, eight hundred eighty-nine".