1198786225 has 36 divisors (see below), whose sum is σ = 1862227164. Its totient is φ = 758782080.

The previous prime is 1198786201. The next prime is 1198786231. The reversal of 1198786225 is 5226878911.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 24216241 + 1174569984 = 4921^2 + 34272^2 .

It is not a de Polignac number, because 1198786225 - 2¹³ = 1198778033 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21714 + ... + 53563.

Almost surely, 2^1198786225 is an apocalyptic number.

It is an amenable number.

1198786225 is a deficient number, since it is larger than the sum of its proper divisors (663440939).

1198786225 is a wasteful number, since it uses less digits than its factorization.

1198786225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75314 (or 75302 counting only the distinct ones).

The product of its digits is 483840, while the sum is 49.

The square root of 1198786225 is about 34623.4923859509. The cubic root of 1198786225 is about 1062.3001626472.

The spelling of 1198786225 in words is "one billion, one hundred ninety-eight million, seven hundred eighty-six thousand, two hundred twenty-five".