13887463425 has 72 divisors (see below), whose sum is σ = 25584633312. Its totient is φ = 6640761600.

The previous prime is 13887463409. The next prime is 13887463427. The reversal of 13887463425 is 52436478831.

It is a happy number.

It is not a de Polignac number, because 13887463425 - 2⁴ = 13887463409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13887463427) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 651994 + ... + 672956.

Almost surely, 2^13887463425 is an apocalyptic number.

13887463425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13887463425 is a deficient number, since it is larger than the sum of its proper divisors (11697169887).

13887463425 is a wasteful number, since it uses less digits than its factorization.

13887463425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21071 (or 21055 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The spelling of 13887463425 in words is "thirteen billion, eight hundred eighty-seven million, four hundred sixty-three thousand, four hundred twenty-five".