1301231025 has 18 divisors (see below), whose sum is σ = 2330649750. Its totient is φ = 693989760.

The previous prime is 1301231021. The next prime is 1301231081. The reversal of 1301231025 is 5201321031.

It can be written as a sum of positive squares in 3 ways, for example, as 17943696 + 1283287329 = 4236^2 + 35823^2 .

It is not a de Polignac number, because 1301231025 - 2² = 1301231021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1301230989 and 1301231007.

It is not an unprimeable number, because it can be changed into a prime (1301231021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2891400 + ... + 2891849.

Almost surely, 2^1301231025 is an apocalyptic number.

1301231025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1301231025 is a deficient number, since it is larger than the sum of its proper divisors (1029418725).

1301231025 is a wasteful number, since it uses less digits than its factorization.

1301231025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5783265 (or 5783257 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1301231025 is about 36072.5799604076. The cubic root of 1301231025 is about 1091.7372697443.

Adding to 1301231025 its reverse (5201321031), we get a palindrome (6502552056).

The spelling of 1301231025 in words is "one billion, three hundred one million, two hundred thirty-one thousand, twenty-five".