1604605470725 has 12 divisors (see below), whose sum is σ = 2043486752004. Its totient is φ = 1248990203520.

The previous prime is 1604605470673. The next prime is 1604605470761. The reversal of 1604605470725 is 5270745064061.

It can be written as a sum of positive squares in 6 ways, for example, as 67317934849 + 1537287535876 = 259457^2 + 1239874^2 .

It is not a de Polignac number, because 1604605470725 - 2⁸ = 1604605470469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1604605470725.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 867353384 + ... + 867355233.

It is an arithmetic number, because the mean of its divisors is an integer number (170290562667).

Almost surely, 2^{1604605470725} is an apocalyptic number.

It is an amenable number.

1604605470725 is a deficient number, since it is larger than the sum of its proper divisors (438881281279).

1604605470725 is a wasteful number, since it uses less digits than its factorization.

1604605470725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734708664 (or 1734708659 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 47.

The spelling of 1604605470725 in words is "one trillion, six hundred four billion, six hundred five million, four hundred seventy thousand, seven hundred twenty-five".