1022542505 has 4 divisors (see below), whose sum is σ = 1227051012. Its totient is φ = 818034000.

The previous prime is 1022542489. The next prime is 1022542553. The reversal of 1022542505 is 5052452201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 235683904 + 786858601 = 15352^2 + 28051^2 .

It is not a de Polignac number, because 1022542505 - 2⁴ = 1022542489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102254246 + ... + 102254255.

It is an arithmetic number, because the mean of its divisors is an integer number (306762753).

Almost surely, 2^1022542505 is an apocalyptic number.

It is an amenable number.

1022542505 is a deficient number, since it is larger than the sum of its proper divisors (204508507).

1022542505 is an equidigital number, since it uses as much as digits as its factorization.

1022542505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204508506.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1022542505 is about 31977.2185313232. The cubic root of 1022542505 is about 1007.4584022708.

Adding to 1022542505 its reverse (5052452201), we get a palindrome (6074994706).

The spelling of 1022542505 in words is "one billion, twenty-two million, five hundred forty-two thousand, five hundred five".