1305378255 has 16 divisors (see below), whose sum is σ = 2097811584. Its totient is φ = 693132960.

The previous prime is 1305378253. The next prime is 1305378257. The reversal of 1305378255 is 5528735031.

It is an interprime number because it is at equal distance from previous prime (1305378253) and next prime (1305378257).

It is not a de Polignac number, because 1305378255 - 2¹ = 1305378253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305378253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188281 + ... + 195090.

It is an arithmetic number, because the mean of its divisors is an integer number (131113224).

Almost surely, 2^1305378255 is an apocalyptic number.

1305378255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1305378255 is a deficient number, since it is larger than the sum of its proper divisors (792433329).

1305378255 is a wasteful number, since it uses less digits than its factorization.

1305378255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383606.

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 1305378255 is about 36130.0187517250. The cubic root of 1305378255 is about 1092.8958864230.

The spelling of 1305378255 in words is "one billion, three hundred five million, three hundred seventy-eight thousand, two hundred fifty-five".