505225246261 has 8 divisors (see below), whose sum is σ = 540240859224. Its totient is φ = 470798131200.

The previous prime is 505225246241. The next prime is 505225246289. The reversal of 505225246261 is 162642522505.

It can be written as a sum of positive squares in 4 ways, for example, as 166652549361 + 338572696900 = 408231^2 + 581870^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-505225246261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505225246231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147122700 + ... + 147126133.

It is an arithmetic number, because the mean of its divisors is an integer number (67530107403).

Almost surely, 2^505225246261 is an apocalyptic number.

It is an amenable number.

505225246261 is a deficient number, since it is larger than the sum of its proper divisors (35015612963).

505225246261 is a wasteful number, since it uses less digits than its factorization.

505225246261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294248951.

The product of its (nonzero) digits is 288000, while the sum is 40.

Adding to 505225246261 its reverse (162642522505), we get a palindrome (667867768766).

The spelling of 505225246261 in words is "five hundred five billion, two hundred twenty-five million, two hundred forty-six thousand, two hundred sixty-one".