1288825858 has 8 divisors (see below), whose sum is σ = 1937643840. Its totient is φ = 642944580.

The previous prime is 1288825819. The next prime is 1288825891. The reversal of 1288825858 is 8585288821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1288825858² = 3322144184498872328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1288825799 and 1288825808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733078 + ... + 734833.

It is an arithmetic number, because the mean of its divisors is an integer number (242205480).

Almost surely, 2^1288825858 is an apocalyptic number.

1288825858 is a deficient number, since it is larger than the sum of its proper divisors (648817982).

1288825858 is a wasteful number, since it uses less digits than its factorization.

1288825858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1468352.

The product of its digits is 3276800, while the sum is 55.

The square root of 1288825858 is about 35900.2208628304. The cubic root of 1288825858 is about 1088.2568603328.

The spelling of 1288825858 in words is "one billion, two hundred eighty-eight million, eight hundred twenty-five thousand, eight hundred fifty-eight".