245505005 has 4 divisors (see below), whose sum is σ = 294606012. Its totient is φ = 196404000.

The previous prime is 245504999. The next prime is 245505031. The reversal of 245505005 is 500505542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 500505542 = 2 ⋅250252771.

It can be written as a sum of positive squares in 2 ways, for example, as 191379556 + 54125449 = 13834^2 + 7357^2 .

It is not a de Polignac number, because 245505005 - 2²² = 241310701 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 24550496 + ... + 24550505.

It is an arithmetic number, because the mean of its divisors is an integer number (73651503).

Almost surely, 2^245505005 is an apocalyptic number.

It is an amenable number.

245505005 is a deficient number, since it is larger than the sum of its proper divisors (49101007).

245505005 is an equidigital number, since it uses as much as digits as its factorization.

245505005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49101006.

The product of its (nonzero) digits is 5000, while the sum is 26.

The square root of 245505005 is about 15668.5993311464. The cubic root of 245505005 is about 626.1621087991.

The spelling of 245505005 in words is "two hundred forty-five million, five hundred five thousand, five".