1388414825 has 48 divisors (see below), whose sum is σ = 2086247424. Its totient is φ = 896313600.

The previous prime is 1388414791. The next prime is 1388414851. The reversal of 1388414825 is 5284148831.

It is not a de Polignac number, because 1388414825 - 2³⁰ = 314673001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197267 + ... + 204183.

It is an arithmetic number, because the mean of its divisors is an integer number (43463488).

Almost surely, 2^1388414825 is an apocalyptic number.

It is an amenable number.

1388414825 is a deficient number, since it is larger than the sum of its proper divisors (697832599).

1388414825 is a wasteful number, since it uses less digits than its factorization.

1388414825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7002 (or 6997 counting only the distinct ones).

The product of its digits is 245760, while the sum is 44.

The square root of 1388414825 is about 37261.4388476881. The cubic root of 1388414825 is about 1115.5946274297.

The spelling of 1388414825 in words is "one billion, three hundred eighty-eight million, four hundred fourteen thousand, eight hundred twenty-five".