1000725403 has 4 divisors (see below), whose sum is σ = 1009906480. Its totient is φ = 991544328.

The previous prime is 1000725371. The next prime is 1000725413. The reversal of 1000725403 is 3045270001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1000725403 - 2⁵ = 1000725371 is a prime.

It is a super-3 number, since 3×1000725403³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000725413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4590375 + ... + 4590592.

It is an arithmetic number, because the mean of its divisors is an integer number (252476620).

Almost surely, 2^1000725403 is an apocalyptic number.

1000725403 is a deficient number, since it is larger than the sum of its proper divisors (9181077).

1000725403 is an equidigital number, since it uses as much as digits as its factorization.

1000725403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9181076.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 1000725403 is about 31634.2441509197. The cubic root of 1000725403 is about 1000.2417425558.

Adding to 1000725403 its reverse (3045270001), we get a palindrome (4045995404).

The spelling of 1000725403 in words is "one billion, seven hundred twenty-five thousand, four hundred three".