220501525 has 12 divisors (see below), whose sum is σ = 275237344. Its totient is φ = 175230000.

The previous prime is 220501511. The next prime is 220501531. The reversal of 220501525 is 525105022.

It is not a de Polignac number, because 220501525 - 2⁵ = 220501493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220501496 and 220501505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25431 + ... + 32980.

Almost surely, 2^220501525 is an apocalyptic number.

220501525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220501525 is a deficient number, since it is larger than the sum of its proper divisors (54735819).

220501525 is a wasteful number, since it uses less digits than its factorization.

220501525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58572 (or 58567 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 220501525 is about 14849.2937542497. The cubic root of 220501525 is about 604.1394545545.

Adding to 220501525 its reverse (525105022), we get a palindrome (745606547).

The spelling of 220501525 in words is "two hundred twenty million, five hundred one thousand, five hundred twenty-five".