1205425505 has 8 divisors (see below), whose sum is σ = 1447516224. Its totient is φ = 963670000.

The previous prime is 1205425457. The next prime is 1205425589. The reversal of 1205425505 is 5055245021.

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

It is not a de Polignac number, because 1205425505 - 2²⁸ = 936990049 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, 75821 + ... + 90330.

It is an arithmetic number, because the mean of its divisors is an integer number (180939528).

Almost surely, 2^1205425505 is an apocalyptic number.

It is an amenable number.

1205425505 is a deficient number, since it is larger than the sum of its proper divisors (242090719).

1205425505 is a wasteful number, since it uses less digits than its factorization.

1205425505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167607.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 1205425505 is about 34719.2382548926. The cubic root of 1205425505 is about 1064.2576781005.

The spelling of 1205425505 in words is "one billion, two hundred five million, four hundred twenty-five thousand, five hundred five".