2120131025 has 6 divisors (see below), whose sum is σ = 2628962502. Its totient is φ = 1696104800.

The previous prime is 2120131021. The next prime is 2120131031. The reversal of 2120131025 is 5201310212.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 345699649 + 1774431376 = 18593^2 + 42124^2 .

It is not a de Polignac number, because 2120131025 - 2² = 2120131021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120130994 and 2120131012.

It is not an unprimeable number, because it can be changed into a prime (2120131021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42402596 + ... + 42402645.

It is an arithmetic number, because the mean of its divisors is an integer number (438160417).

Almost surely, 2^2120131025 is an apocalyptic number.

2120131025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2120131025 is a deficient number, since it is larger than the sum of its proper divisors (508831477).

2120131025 is an equidigital number, since it uses as much as digits as its factorization.

2120131025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84805251 (or 84805246 counting only the distinct ones).

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

The square root of 2120131025 is about 46044.8805514793. The cubic root of 2120131025 is about 1284.6581223973.

Adding to 2120131025 its reverse (5201310212), we get a palindrome (7321441237).

The spelling of 2120131025 in words is "two billion, one hundred twenty million, one hundred thirty-one thousand, twenty-five".