2201543125 has 30 divisors (see below), whose sum is σ = 2793469866. Its totient is φ = 1734480000.

The previous prime is 2201543119. The next prime is 2201543143. The reversal of 2201543125 is 5213451022.

It can be written as a sum of positive squares in 15 ways, for example, as 1965060241 + 236482884 = 44329^2 + 15378^2 .

It is not a de Polignac number, because 2201543125 - 2⁹ = 2201542613 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2201543125.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3330295 + ... + 3330955.

Almost surely, 2^2201543125 is an apocalyptic number.

2201543125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2201543125 is a deficient number, since it is larger than the sum of its proper divisors (591926741).

2201543125 is an frugal number, since it uses more digits than its factorization.

2201543125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827 (or 739 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2201543125 is about 46920.6044824659. The cubic root of 2201543125 is about 1300.8954629294.

Adding to 2201543125 its reverse (5213451022), we get a palindrome (7414994147).

The spelling of 2201543125 in words is "two billion, two hundred one million, five hundred forty-three thousand, one hundred twenty-five".