78025810555250 has 32 divisors (see below), whose sum is σ = 146066057323056. Its totient is φ = 31209952435200.

The previous prime is 78025810555243. The next prime is 78025810555291. The reversal of 78025810555250 is 5255501852087.

It can be written as a sum of positive squares in 8 ways, for example, as 1376888681281 + 76648921873969 = 1173409^2 + 8754937^2 .

It is a super-2 number, since 2×78025810555250² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78025810555192 and 78025810555201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19667282 + ... + 23299218.

Almost surely, 2^{78025810555250} is an apocalyptic number.

78025810555250 is a deficient number, since it is larger than the sum of its proper divisors (68040246767806).

78025810555250 is a wasteful number, since it uses less digits than its factorization.

78025810555250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3717887 (or 3717877 counting only the distinct ones).

The product of its (nonzero) digits is 5600000, while the sum is 53.

The spelling of 78025810555250 in words is "seventy-eight trillion, twenty-five billion, eight hundred ten million, five hundred fifty-five thousand, two hundred fifty".