422521505 has 16 divisors (see below), whose sum is σ = 583887744. Its totient is φ = 287514240.

The previous prime is 422521499. The next prime is 422521531. The reversal of 422521505 is 505125224.

It is not a de Polignac number, because 422521505 - 2¹⁰ = 422520481 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 15 ways as a sum of consecutive naturals, for example, 41492 + ... + 50661.

It is an arithmetic number, because the mean of its divisors is an integer number (36492984).

Almost surely, 2^422521505 is an apocalyptic number.

It is an amenable number.

422521505 is a deficient number, since it is larger than the sum of its proper divisors (161366239).

422521505 is a wasteful number, since it uses less digits than its factorization.

422521505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92296.

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

The square root of 422521505 is about 20555.3278981387. The cubic root of 422521505 is about 750.3829185387.

Adding to 422521505 its reverse (505125224), we get a palindrome (927646729).

The spelling of 422521505 in words is "four hundred twenty-two million, five hundred twenty-one thousand, five hundred five".