505420725505 has 8 divisors (see below), whose sum is σ = 612393268032. Its totient is φ = 400410982128.

The previous prime is 505420725493. The next prime is 505420725577. The reversal of 505420725505 is 505527024505.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 505420725505 - 2⁹ = 505420724993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490699219 + ... + 490700248.

It is an arithmetic number, because the mean of its divisors is an integer number (76549158504).

Almost surely, 2^505420725505 is an apocalyptic number.

It is an amenable number.

505420725505 is a deficient number, since it is larger than the sum of its proper divisors (106972542527).

505420725505 is a wasteful number, since it uses less digits than its factorization.

505420725505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981399575.

The product of its (nonzero) digits is 350000, while the sum is 40.

The spelling of 505420725505 in words is "five hundred five billion, four hundred twenty million, seven hundred twenty-five thousand, five hundred five".