1200012025 has 12 divisors (see below), whose sum is σ = 1539326700. Its totient is φ = 926905280.

The previous prime is 1200012019. The next prime is 1200012053. The reversal of 1200012025 is 5202100021.

It can be written as a sum of positive squares in 6 ways, for example, as 216060601 + 983951424 = 14699^2 + 31368^2 .

It is not a de Polignac number, because 1200012025 - 2¹⁷ = 1199880953 is a prime.

1200012025 is a modest number, since divided by 12025 gives 1200 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1200011996 and 1200012014.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 826870 + ... + 828319.

It is an arithmetic number, because the mean of its divisors is an integer number (128277225).

Almost surely, 2^1200012025 is an apocalyptic number.

It is an amenable number.

1200012025 is a deficient number, since it is larger than the sum of its proper divisors (339314675).

1200012025 is a wasteful number, since it uses less digits than its factorization.

1200012025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655228 (or 1655223 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1200012025 is about 34641.1897168674. The cubic root of 1200012025 is about 1062.6621187456.

Adding to 1200012025 its reverse (5202100021), we get a palindrome (6402112046).

It can be divided in two parts, 12000 and 12025, that added together give a square (24025 = 155²).

The spelling of 1200012025 in words is "one billion, two hundred million, twelve thousand, twenty-five".