1255000197 has 32 divisors (see below), whose sum is σ = 1969349760. Its totient is φ = 702341120.

The previous prime is 1255000183. The next prime is 1255000213. The reversal of 1255000197 is 7910005521.

It is a cyclic number.

It is not a de Polignac number, because 1255000197 - 2¹¹ = 1254998149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255000127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8629 + ... + 50837.

It is an arithmetic number, because the mean of its divisors is an integer number (61542180).

Almost surely, 2^1255000197 is an apocalyptic number.

1255000197 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1255000197 is a deficient number, since it is larger than the sum of its proper divisors (714349563).

1255000197 is a wasteful number, since it uses less digits than its factorization.

1255000197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42293.

The product of its (nonzero) digits is 3150, while the sum is 30.

The square root of 1255000197 is about 35425.9819482820. The cubic root of 1255000197 is about 1078.6517804400.

The spelling of 1255000197 in words is "one billion, two hundred fifty-five million, one hundred ninety-seven", and thus it is an aban number.