1305005235 has 16 divisors (see below), whose sum is σ = 2088646560. Its totient is φ = 695790080.

The previous prime is 1305005231. The next prime is 1305005239. The reversal of 1305005235 is 5325005031.

It is an interprime number because it is at equal distance from previous prime (1305005231) and next prime (1305005239).

It is not a de Polignac number, because 1305005235 - 2² = 1305005231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1305005231) 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, 45931 + ... + 68699.

It is an arithmetic number, because the mean of its divisors is an integer number (130540410).

Almost surely, 2^1305005235 is an apocalyptic number.

1305005235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1305005235 is a deficient number, since it is larger than the sum of its proper divisors (783641325).

1305005235 is a wasteful number, since it uses less digits than its factorization.

1305005235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26598.

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 1305005235 is about 36124.8561934854. The cubic root of 1305005235 is about 1092.7917758942.

The spelling of 1305005235 in words is "one billion, three hundred five million, five thousand, two hundred thirty-five".