1255945378 has 8 divisors (see below), whose sum is σ = 1884449772. Its totient is φ = 627795456.

The previous prime is 1255945343. The next prime is 1255945381. The reversal of 1255945378 is 8735495521.

It can be written as a sum of positive squares in 2 ways, for example, as 1133466889 + 122478489 = 33667^2 + 11067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79575 + ... + 94042.

Almost surely, 2^1255945378 is an apocalyptic number.

1255945378 is a deficient number, since it is larger than the sum of its proper divisors (628504394).

1255945378 is a wasteful number, since it uses less digits than its factorization.

1255945378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177236.

The product of its digits is 1512000, while the sum is 49.

The square root of 1255945378 is about 35439.3196605127. The cubic root of 1255945378 is about 1078.9225016009.

The spelling of 1255945378 in words is "one billion, two hundred fifty-five million, nine hundred forty-five thousand, three hundred seventy-eight".