13687965225 has 144 divisors (see below), whose sum is σ = 29369995200. Its totient is φ = 6245683200.

The previous prime is 13687965223. The next prime is 13687965227. The reversal of 13687965225 is 52256978631.

13687965225 is a `hidden beast` number, since 1 + 36 + 87 + 9 + 6 + 522 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (13687965223) and next prime (13687965227).

It is not a de Polignac number, because 13687965225 - 2¹ = 13687965223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13687965223) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1130001 + ... + 1142049.

It is an arithmetic number, because the mean of its divisors is an integer number (203958300).

Almost surely, 2^13687965225 is an apocalyptic number.

13687965225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13687965225 is an abundant number, since it is smaller than the sum of its proper divisors (15682029975).

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

13687965225 is a wasteful number, since it uses less digits than its factorization.

13687965225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12102 (or 12085 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 13687965225 in words is "thirteen billion, six hundred eighty-seven million, nine hundred sixty-five thousand, two hundred twenty-five".