1198355725 has 12 divisors (see below), whose sum is σ = 1698241504. Its totient is φ = 821729520.

The previous prime is 1198355671. The next prime is 1198355737. The reversal of 1198355725 is 5275538911.

It is not a de Polignac number, because 1198355725 - 2⁷ = 1198355597 is a prime.

It is a Duffinian number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 3423699 + ... + 3424048.

Almost surely, 2^1198355725 is an apocalyptic number.

It is an amenable number.

1198355725 is a deficient number, since it is larger than the sum of its proper divisors (499885779).

1198355725 is an equidigital number, since it uses as much as digits as its factorization.

1198355725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6847764 (or 6847759 counting only the distinct ones).

The product of its digits is 378000, while the sum is 46.

The square root of 1198355725 is about 34617.2749505215. The cubic root of 1198355725 is about 1062.1729854061.

The spelling of 1198355725 in words is "one billion, one hundred ninety-eight million, three hundred fifty-five thousand, seven hundred twenty-five".