1387625125 has 32 divisors (see below), whose sum is σ = 1775854080. Its totient is φ = 1082203200.

The previous prime is 1387625101. The next prime is 1387625143. The reversal of 1387625125 is 5215267831.

It is not a de Polignac number, because 1387625125 - 2²¹ = 1385527973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 818779 + ... + 820471.

It is an arithmetic number, because the mean of its divisors is an integer number (55495440).

Almost surely, 2^1387625125 is an apocalyptic number.

It is an amenable number.

1387625125 is a deficient number, since it is larger than the sum of its proper divisors (388228955).

1387625125 is an equidigital number, since it uses as much as digits as its factorization.

1387625125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1870 (or 1860 counting only the distinct ones).

The product of its digits is 100800, while the sum is 40.

The square root of 1387625125 is about 37250.8405945423. The cubic root of 1387625125 is about 1115.3830787046.

The spelling of 1387625125 in words is "one billion, three hundred eighty-seven million, six hundred twenty-five thousand, one hundred twenty-five".