13887042725 has 6 divisors (see below), whose sum is σ = 17219933010. Its totient is φ = 11109634160.

The previous prime is 13887042713. The next prime is 13887042737. The reversal of 13887042725 is 52724078831.

It is an interprime number because it is at equal distance from previous prime (13887042713) and next prime (13887042737).

It can be written as a sum of positive squares in 3 ways, for example, as 3276188644 + 10610854081 = 57238^2 + 103009^2 .

It is not a de Polignac number, because 13887042725 - 2⁴ = 13887042709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13887042725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 277740830 + ... + 277740879.

It is an arithmetic number, because the mean of its divisors is an integer number (2869988835).

Almost surely, 2^13887042725 is an apocalyptic number.

It is an amenable number.

13887042725 is a deficient number, since it is larger than the sum of its proper divisors (3332890285).

13887042725 is an equidigital number, since it uses as much as digits as its factorization.

13887042725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555481719 (or 555481714 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 13887042725 in words is "thirteen billion, eight hundred eighty-seven million, forty-two thousand, seven hundred twenty-five".