1200002025 has 48 divisors (see below), whose sum is σ = 2009982464. Its totient is φ = 631687680.

The previous prime is 1200002017. The next prime is 1200002029. The reversal of 1200002025 is 5202000021.

It is not a de Polignac number, because 1200002025 - 2³ = 1200002017 is a prime.

It is a Duffinian number.

1200002025 is a modest number, since divided by 2025 gives 1200 as remainder.

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 1200002025.

It is not an unprimeable number, because it can be changed into a prime (1200002029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2625597 + ... + 2626053.

Almost surely, 2^1200002025 is an apocalyptic number.

1200002025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1200002025 is a deficient number, since it is larger than the sum of its proper divisors (809980439).

1200002025 is a wasteful number, since it uses less digits than its factorization.

1200002025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 845 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 1200002025 is about 34641.0453797226. The cubic root of 1200002025 is about 1062.6591669277.

Adding to 1200002025 its reverse (5202000021), we get a palindrome (6402002046).

The spelling of 1200002025 in words is "one billion, two hundred million, two thousand, twenty-five".