1252628026389 has 32 divisors (see below), whose sum is σ = 1882037664000. Its totient is φ = 823255695360.

The previous prime is 1252628026379. The next prime is 1252628026477. The reversal of 1252628026389 is 9836208262521.

1252628026389 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 628 + 0 + 2 + 6 + 3 + 8 + 9 = 666.

It is not a de Polignac number, because 1252628026389 - 2⁴ = 1252628026373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252628026379) 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 31 ways as a sum of consecutive naturals, for example, 35318337 + ... + 35353785.

It is an arithmetic number, because the mean of its divisors is an integer number (58813677000).

Almost surely, 2^{1252628026389} is an apocalyptic number.

It is an amenable number.

1252628026389 is a deficient number, since it is larger than the sum of its proper divisors (629409637611).

1252628026389 is a wasteful number, since it uses less digits than its factorization.

1252628026389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53962 (or 53956 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 1252628026389 in words is "one trillion, two hundred fifty-two billion, six hundred twenty-eight million, twenty-six thousand, three hundred eighty-nine".