253522605 has 32 divisors (see below), whose sum is σ = 487987200. Its totient is φ = 109795392.

The previous prime is 253522579. The next prime is 253522609. The reversal of 253522605 is 506225352.

It is not a de Polignac number, because 253522605 - 2⁶ = 253522541 is a prime.

It is a super-2 number, since 2×253522605² = 128547422491972050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253522609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61545 + ... + 65534.

It is an arithmetic number, because the mean of its divisors is an integer number (15249600).

Almost surely, 2^253522605 is an apocalyptic number.

It is an amenable number.

253522605 is a deficient number, since it is larger than the sum of its proper divisors (234464595).

253522605 is a wasteful number, since it uses less digits than its factorization.

253522605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127113.

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 253522605 is about 15922.3931932357. The cubic root of 253522605 is about 632.9055385899.

Adding to 253522605 its reverse (506225352), we get a palindrome (759747957).

The spelling of 253522605 in words is "two hundred fifty-three million, five hundred twenty-two thousand, six hundred five".