2271521125 has 32 divisors (see below), whose sum is σ = 2934097920. Its totient is φ = 1753920000.

The previous prime is 2271521123. The next prime is 2271521149. The reversal of 2271521125 is 5211251722.

It is not a de Polignac number, because 2271521125 - 2¹ = 2271521123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2271521093 and 2271521102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271521123) 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, 2444661 + ... + 2445589.

It is an arithmetic number, because the mean of its divisors is an integer number (91690560).

Almost surely, 2^2271521125 is an apocalyptic number.

2271521125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2271521125 is a deficient number, since it is larger than the sum of its proper divisors (662576795).

2271521125 is an equidigital number, since it uses as much as digits as its factorization.

2271521125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1596 counting only the distinct ones).

The product of its digits is 2800, while the sum is 28.

The square root of 2271521125 is about 47660.4775993695. The cubic root of 2271521125 is about 1314.5353213668.

Adding to 2271521125 its reverse (5211251722), we get a palindrome (7482772847).

It can be divided in two parts, 2271521 and 125, that added together give a triangular number (2271646 = T₂₁₃₁).

The spelling of 2271521125 in words is "two billion, two hundred seventy-one million, five hundred twenty-one thousand, one hundred twenty-five".