220240525 has 24 divisors (see below), whose sum is σ = 301748544. Its totient is φ = 158611200.

The previous prime is 220240511. The next prime is 220240541. The reversal of 220240525 is 525042022.

It is a happy number.

It is not a de Polignac number, because 220240525 - 2¹³ = 220232333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220240496 and 220240505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1491 + ... + 21040.

It is an arithmetic number, because the mean of its divisors is an integer number (12572856).

Almost surely, 2^220240525 is an apocalyptic number.

220240525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220240525 is a deficient number, since it is larger than the sum of its proper divisors (81508019).

220240525 is a wasteful number, since it uses less digits than its factorization.

220240525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22581 (or 22576 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 220240525 is about 14840.5028553617. The cubic root of 220240525 is about 603.9009941445.

Adding to 220240525 its reverse (525042022), we get a palindrome (745282547).

The spelling of 220240525 in words is "two hundred twenty million, two hundred forty thousand, five hundred twenty-five".