1001530025 has 12 divisors (see below), whose sum is σ = 1262258124. Its totient is φ = 788088000.

The previous prime is 1001530021. The next prime is 1001530067. The reversal of 1001530025 is 5200351001.

1001530025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 251920384 + 749609641 = 15872^2 + 27379^2 .

It is not a de Polignac number, because 1001530025 - 2² = 1001530021 is a prime.

It is a super-3 number, since 3×1001530025³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1001529985 and 1001530012.

It is not an unprimeable number, because it can be changed into a prime (1001530021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326846 + ... + 329895.

It is an arithmetic number, because the mean of its divisors is an integer number (105188177).

Almost surely, 2^1001530025 is an apocalyptic number.

It is an amenable number.

1001530025 is a deficient number, since it is larger than the sum of its proper divisors (260728099).

1001530025 is an equidigital number, since it uses as much as digits as its factorization.

1001530025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656812 (or 656807 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1001530025 is about 31646.9591746190. The cubic root of 1001530025 is about 1000.5097484457.

Adding to 1001530025 its reverse (5200351001), we get a palindrome (6201881026).

The spelling of 1001530025 in words is "one billion, one million, five hundred thirty thousand, twenty-five".