245120065 has 8 divisors (see below), whose sum is σ = 294414120. Its totient is φ = 195916032.

The previous prime is 245120053. The next prime is 245120077. The reversal of 245120065 is 560021542.

It is an interprime number because it is at equal distance from previous prime (245120053) and next prime (245120077).

It can be written as a sum of positive squares in 4 ways, for example, as 22543504 + 222576561 = 4748^2 + 14919^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 245120065 - 2²³ = 236731457 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16360 + ... + 27529.

It is an arithmetic number, because the mean of its divisors is an integer number (36801765).

Almost surely, 2^245120065 is an apocalyptic number.

It is an amenable number.

245120065 is a deficient number, since it is larger than the sum of its proper divisors (49294055).

245120065 is a wasteful number, since it uses less digits than its factorization.

245120065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45011.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 245120065 is about 15656.3107084651. The cubic root of 245120065 is about 625.8346736157.

The spelling of 245120065 in words is "two hundred forty-five million, one hundred twenty thousand, sixty-five".