245032505 has 4 divisors (see below), whose sum is σ = 294039012. Its totient is φ = 196026000.

The previous prime is 245032499. The next prime is 245032507. The reversal of 245032505 is 505230542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26790976 + 218241529 = 5176^2 + 14773^2 .

It is a de Polignac number, because none of the positive numbers 2^k-245032505 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245032507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24503246 + ... + 24503255.

It is an arithmetic number, because the mean of its divisors is an integer number (73509753).

Almost surely, 2^245032505 is an apocalyptic number.

It is an amenable number.

245032505 is a deficient number, since it is larger than the sum of its proper divisors (49006507).

245032505 is an equidigital number, since it uses as much as digits as its factorization.

245032505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49006506.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 245032505 is about 15653.5141421982. The cubic root of 245032505 is about 625.7601460433.

The spelling of 245032505 in words is "two hundred forty-five million, thirty-two thousand, five hundred five".