1506561430625 has 40 divisors (see below), whose sum is σ = 2098253219040. Its totient is φ = 1074649248000.

The previous prime is 1506561430607. The next prime is 1506561430667. The reversal of 1506561430625 is 5260341656051.

It is not a de Polignac number, because 1506561430625 - 2²⁰ = 1506560382049 is a prime.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 3529547 + ... + 3933296.

It is an arithmetic number, because the mean of its divisors is an integer number (52456330476).

Almost surely, 2^{1506561430625} is an apocalyptic number.

It is an amenable number.

1506561430625 is a deficient number, since it is larger than the sum of its proper divisors (591691788415).

1506561430625 is an equidigital number, since it uses as much as digits as its factorization.

1506561430625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7462899 (or 7462884 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 1506561430625 in words is "one trillion, five hundred six billion, five hundred sixty-one million, four hundred thirty thousand, six hundred twenty-five".