1000522625 has 8 divisors (see below), whose sum is σ = 1248652392. Its totient is φ = 800418000.

The previous prime is 1000522583. The next prime is 1000522639. The reversal of 1000522625 is 5262250001.

It can be written as a sum of positive squares in 4 ways, for example, as 319730161 + 680792464 = 17881^2 + 26092^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1000522625 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000522625.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4001966 + ... + 4002215.

It is an arithmetic number, because the mean of its divisors is an integer number (156081549).

Almost surely, 2^1000522625 is an apocalyptic number.

It is an amenable number.

1000522625 is a deficient number, since it is larger than the sum of its proper divisors (248129767).

1000522625 is an frugal number, since it uses more digits than its factorization.

1000522625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8004196 (or 8004186 counting only the distinct ones).

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

The square root of 1000522625 is about 31631.0389491082. The cubic root of 1000522625 is about 1000.1741779936.

Adding to 1000522625 its reverse (5262250001), we get a palindrome (6262772626).

The spelling of 1000522625 in words is "one billion, five hundred twenty-two thousand, six hundred twenty-five".