1287373625 has 16 divisors (see below), whose sum is σ = 1607748480. Its totient is φ = 1029190000.

The previous prime is 1287373601. The next prime is 1287373627. The reversal of 1287373625 is 5263737821.

It is not a de Polignac number, because 1287373625 - 2⁸ = 1287373369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1287373627) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 252350 + ... + 257400.

It is an arithmetic number, because the mean of its divisors is an integer number (100484280).

Almost surely, 2^1287373625 is an apocalyptic number.

It is an amenable number.

1287373625 is a deficient number, since it is larger than the sum of its proper divisors (320374855).

1287373625 is an equidigital number, since it uses as much as digits as its factorization.

1287373625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7105 (or 7095 counting only the distinct ones).

The product of its digits is 423360, while the sum is 44.

The square root of 1287373625 is about 35879.9892001099. The cubic root of 1287373625 is about 1087.8479619339.

The spelling of 1287373625 in words is "one billion, two hundred eighty-seven million, three hundred seventy-three thousand, six hundred twenty-five".