1730139025 has 6 divisors (see below), whose sum is σ = 2145372422. Its totient is φ = 1384111200.

The previous prime is 1730139023. The next prime is 1730139029. The reversal of 1730139025 is 5209310371.

It can be written as a sum of positive squares in 3 ways, for example, as 20151121 + 1709987904 = 4489^2 + 41352^2 .

It is not a de Polignac number, because 1730139025 - 2¹ = 1730139023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1730139023) 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, 34602756 + ... + 34602805.

Almost surely, 2^1730139025 is an apocalyptic number.

It is an amenable number.

1730139025 is a deficient number, since it is larger than the sum of its proper divisors (415233397).

1730139025 is an equidigital number, since it uses as much as digits as its factorization.

1730139025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69205571 (or 69205566 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1730139025 is about 41594.9398965788. The cubic root of 1730139025 is about 1200.4949405094.

Adding to 1730139025 its reverse (5209310371), we get a palindrome (6939449396).

The spelling of 1730139025 in words is "one billion, seven hundred thirty million, one hundred thirty-nine thousand, twenty-five".