1004025997 has 8 divisors (see below), whose sum is σ = 1085983640. Its totient is φ = 922743360.

The previous prime is 1004025991. The next prime is 1004026033. The reversal of 1004025997 is 7995204001.

It can be written as a sum of positive squares in 4 ways, for example, as 109956196 + 894069801 = 10486^2 + 29901^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1004025997 - 2¹⁵ = 1003993229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004025991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165654 + ... + 171607.

It is an arithmetic number, because the mean of its divisors is an integer number (135747955).

Almost surely, 2^1004025997 is an apocalyptic number.

It is an amenable number.

1004025997 is a deficient number, since it is larger than the sum of its proper divisors (81957643).

1004025997 is a wasteful number, since it uses less digits than its factorization.

1004025997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337503.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1004025997 is about 31686.3692618766. The cubic root of 1004025997 is about 1001.3402020561.

Adding to 1004025997 its reverse (7995204001), we get a palindrome (8999229998).

The spelling of 1004025997 in words is "one billion, four million, twenty-five thousand, nine hundred ninety-seven".