1798825525478 has 16 divisors (see below), whose sum is σ = 2771233911600. Its totient is φ = 875082121056.

The previous prime is 1798825525477. The next prime is 1798825525489. The reversal of 1798825525478 is 8745255288971.

It is a super-2 number, since 2×1798825525478² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798825525477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2846825 + ... + 3420827.

It is an arithmetic number, because the mean of its divisors is an integer number (173202119475).

Almost surely, 2^{1798825525478} is an apocalyptic number.

1798825525478 is a deficient number, since it is larger than the sum of its proper divisors (972408386122).

1798825525478 is a wasteful number, since it uses less digits than its factorization.

1798825525478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616391.

The product of its digits is 451584000, while the sum is 71.

The spelling of 1798825525478 in words is "one trillion, seven hundred ninety-eight billion, eight hundred twenty-five million, five hundred twenty-five thousand, four hundred seventy-eight".