1255398195 has 16 divisors (see below), whose sum is σ = 2009181600. Its totient is φ = 669364224.

The previous prime is 1255398187. The next prime is 1255398211. The reversal of 1255398195 is 5918935521.

It is not a de Polignac number, because 1255398195 - 2³ = 1255398187 is a prime.

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, 60531 + ... + 78579.

It is an arithmetic number, because the mean of its divisors is an integer number (125573850).

Almost surely, 2^1255398195 is an apocalyptic number.

1255398195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1255398195 is a deficient number, since it is larger than the sum of its proper divisors (753783405).

1255398195 is a wasteful number, since it uses less digits than its factorization.

1255398195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22694.

The product of its digits is 486000, while the sum is 48.

The square root of 1255398195 is about 35431.5988208266. The cubic root of 1255398195 is about 1078.7657926075.

The spelling of 1255398195 in words is "one billion, two hundred fifty-five million, three hundred ninety-eight thousand, one hundred ninety-five".