1003509725 has 6 divisors (see below), whose sum is σ = 1244352090. Its totient is φ = 802807760.

The previous prime is 1003509713. The next prime is 1003509733. The reversal of 1003509725 is 5279053001.

It can be written as a sum of positive squares in 3 ways, for example, as 115648516 + 887861209 = 10754^2 + 29797^2 .

It is not a de Polignac number, because 1003509725 - 2²⁸ = 735074269 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1003509691 and 1003509700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20070170 + ... + 20070219.

It is an arithmetic number, because the mean of its divisors is an integer number (207392015).

Almost surely, 2^1003509725 is an apocalyptic number.

It is an amenable number.

1003509725 is a deficient number, since it is larger than the sum of its proper divisors (240842365).

1003509725 is an equidigital number, since it uses as much as digits as its factorization.

1003509725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40140399 (or 40140394 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 1003509725 is about 31678.2216199079. The cubic root of 1003509725 is about 1001.1685423103.

The spelling of 1003509725 in words is "one billion, three million, five hundred nine thousand, seven hundred twenty-five".