1012506155625 has 80 divisors (see below), whose sum is σ = 1787247747648. Its totient is φ = 507941376000.

The previous prime is 1012506155623. The next prime is 1012506155677. The reversal of 1012506155625 is 5265516052101.

It is not a de Polignac number, because 1012506155625 - 2¹ = 1012506155623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1012506155623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 60777297 + ... + 60793953.

Almost surely, 2^{1012506155625} is an apocalyptic number.

1012506155625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1012506155625 is a deficient number, since it is larger than the sum of its proper divisors (774741592023).

1012506155625 is a wasteful number, since it uses less digits than its factorization.

1012506155625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18604 (or 18589 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 39.

The spelling of 1012506155625 in words is "one trillion, twelve billion, five hundred six million, one hundred fifty-five thousand, six hundred twenty-five".