1004123525 has 6 divisors (see below), whose sum is σ = 1245113202. Its totient is φ = 803298800.

The previous prime is 1004123453. The next prime is 1004123539. The reversal of 1004123525 is 5253214001.

It can be written as a sum of positive squares in 3 ways, for example, as 191075329 + 813048196 = 13823^2 + 28514^2 .

It is not a de Polignac number, because 1004123525 - 2²⁰ = 1003074949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1004123525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20082446 + ... + 20082495.

It is an arithmetic number, because the mean of its divisors is an integer number (207518867).

Almost surely, 2^1004123525 is an apocalyptic number.

It is an amenable number.

1004123525 is a deficient number, since it is larger than the sum of its proper divisors (240989677).

1004123525 is an equidigital number, since it uses as much as digits as its factorization.

1004123525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40164951 (or 40164946 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1004123525 is about 31687.9081827753. The cubic root of 1004123525 is about 1001.3726233763.

Adding to 1004123525 its reverse (5253214001), we get a palindrome (6257337526).

The spelling of 1004123525 in words is "one billion, four million, one hundred twenty-three thousand, five hundred twenty-five".