505601655025 has 24 divisors (see below), whose sum is σ = 664309483704. Its totient is φ = 380410598400.

The previous prime is 505601655023. The next prime is 505601655047. The reversal of 505601655025 is 520556106505.

It can be written as a sum of positive squares in 12 ways, for example, as 183033841 + 505418621184 = 13529^2 + 710928^2 .

It is not a de Polignac number, because 505601655025 - 2¹ = 505601655023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505601655023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 150295 + ... + 1016755.

It is an arithmetic number, because the mean of its divisors is an integer number (27679561821).

Almost surely, 2^505601655025 is an apocalyptic number.

It is an amenable number.

505601655025 is a deficient number, since it is larger than the sum of its proper divisors (158707828679).

505601655025 is a wasteful number, since it uses less digits than its factorization.

505601655025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867861 (or 867856 counting only the distinct ones).

The product of its (nonzero) digits is 225000, while the sum is 40.

The spelling of 505601655025 in words is "five hundred five billion, six hundred one million, six hundred fifty-five thousand, twenty-five".