220131125 has 8 divisors (see below), whose sum is σ = 274723800. Its totient is φ = 176104800.

The previous prime is 220131089. The next prime is 220131133. The reversal of 220131125 is 521131022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2244004 + 217887121 = 1498^2 + 14761^2 .

It is not a de Polignac number, because 220131125 - 2²² = 215936821 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880400 + ... + 880649.

It is an arithmetic number, because the mean of its divisors is an integer number (34340475).

Almost surely, 2^220131125 is an apocalyptic number.

220131125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220131125 is a deficient number, since it is larger than the sum of its proper divisors (54592675).

220131125 is an equidigital number, since it uses as much as digits as its factorization.

220131125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761064 (or 1761054 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 220131125 is about 14836.8165385975. The cubic root of 220131125 is about 603.8009857395.

Adding to 220131125 its reverse (521131022), we get a palindrome (741262147).

The spelling of 220131125 in words is "two hundred twenty million, one hundred thirty-one thousand, one hundred twenty-five".