1255000198 has 32 divisors (see below), whose sum is σ = 2071203840.
Its totient is φ = 567673920.
The previous prime is 1255000183. The next prime is 1255000213. The reversal of 1255000198 is 8910005521.
It is an interprime number because it is at equal distance from previous prime (1255000183) and next prime (1255000213).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 949378 + ... + 950698.
It is an arithmetic number, because the mean of its divisors is an integer number (64725120).
It is a vampire number, since it can be written as 25001 ⋅ 50198 (with its own digits).
Almost surely, 21255000198 is an apocalyptic number.
1255000198 is a deficient number, since it is larger than the sum of its proper divisors (816203642).
1255000198 is a wasteful number, since it uses less digits than its factorization.
1255000198 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2452.
The product of its (nonzero) digits is 3600, while the sum is 31.
The square root of 1255000198 is about 35425.9819623959.
The cubic root of 1255000198 is about 1078.6517807265.
The spelling of 1255000198 in words is "one billion, two hundred fifty-five million, one hundred ninety-eight", and thus it is an aban number.