245502505 has 4 divisors (see below), whose sum is σ = 294603012. Its totient is φ = 196402000.

The previous prime is 245502503. The next prime is 245502563. The reversal of 245502505 is 505205542.

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 125731369 + 119771136 = 11213^2 + 10944^2 .

It is not a de Polignac number, because 245502505 - 2¹ = 245502503 is a prime.

It is a super-2 number, since 2×245502505² = 120542959922550050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245502503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24550246 + ... + 24550255.

It is an arithmetic number, because the mean of its divisors is an integer number (73650753).

Almost surely, 2^245502505 is an apocalyptic number.

It is an amenable number.

245502505 is a deficient number, since it is larger than the sum of its proper divisors (49100507).

245502505 is an equidigital number, since it uses as much as digits as its factorization.

245502505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49100506.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 245502505 is about 15668.5195535507. The cubic root of 245502505 is about 626.1599833698.

The spelling of 245502505 in words is "two hundred forty-five million, five hundred two thousand, five hundred five".