122512505 has 8 divisors (see below), whose sum is σ = 148667400. Its totient is φ = 96908416.

The previous prime is 122512499. The next prime is 122512517. The reversal of 122512505 is 505215221.

It can be written as a sum of positive squares in 4 ways, for example, as 11881 + 122500624 = 109^2 + 11068^2 .

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 122512505 - 2⁶ = 122512441 is a prime.

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, 137210 + ... + 138099.

It is an arithmetic number, because the mean of its divisors is an integer number (18583425).

Almost surely, 2^122512505 is an apocalyptic number.

It is an amenable number.

122512505 is a deficient number, since it is larger than the sum of its proper divisors (26154895).

122512505 is an equidigital number, since it uses as much as digits as its factorization.

122512505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275403.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 122512505 is about 11068.5367144894. The cubic root of 122512505 is about 496.6610930314.

Adding to 122512505 its reverse (505215221), we get a palindrome (627727726).

The spelling of 122512505 in words is "one hundred twenty-two million, five hundred twelve thousand, five hundred five".