1000253025 has 18 divisors (see below), whose sum is σ = 1791564710. Its totient is φ = 533468160.

The previous prime is 1000253017. The next prime is 1000253063. The reversal of 1000253025 is 5203520001.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 230523489 + 769729536 = 15183^2 + 27744^2 .

It is not a de Polignac number, because 1000253025 - 2³ = 1000253017 is a prime.

It is a super-2 number, since 2×1000253025² = 2001012228043301250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1000252989 and 1000253007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2222560 + ... + 2223009.

Almost surely, 2^1000253025 is an apocalyptic number.

1000253025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1000253025 is a deficient number, since it is larger than the sum of its proper divisors (791311685).

1000253025 is a wasteful number, since it uses less digits than its factorization.

1000253025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445585 (or 4445577 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 1000253025 is about 31626.7770251728. Note that the first 3 decimals coincide. The cubic root of 1000253025 is about 1000.0843345541.

Adding to 1000253025 its reverse (5203520001), we get a palindrome (6203773026).

The spelling of 1000253025 in words is "one billion, two hundred fifty-three thousand, twenty-five".