1000025 has 24 divisors (see below), whose sum is σ = 1421784. Its totient is φ = 691200.

The previous prime is 1000003. The next prime is 1000033. The reversal of 1000025 is 5200001.

1000025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 635209 + 364816 = 797^2 + 604^2 .

It is not a de Polignac number, because 1000025 - 2⁶ = 999961 is a prime.

It is a plaindrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 999976 and 1000021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5435 + ... + 5615.

It is an arithmetic number, because the mean of its divisors is an integer number (59241).

2^1000025 is an apocalyptic number.

It is an amenable number.

1000025 is a deficient number, since it is larger than the sum of its proper divisors (421759).

1000025 is a wasteful number, since it uses less digits than its factorization.

1000025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 8.

The square root of 1000025 is about 1000.0124999219. The cubic root of 1000025 is about 100.0008333264. Note that the first 3 decimals are identical.

Adding to 1000025 its reverse (5200001), we get a palindrome (6200026).

It can be divided in two parts, 10000 and 25, that multiplied together give a square (250000 = 500²).

The spelling of 1000025 in words is "one million, twenty-five", and thus it is an aban number and an uban number.