245408505 has 16 divisors (see below), whose sum is σ = 409726080. Its totient is φ = 125193728.

The previous prime is 245408453. The next prime is 245408509. The reversal of 245408505 is 505804542.

245408505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 245408505 - 2¹⁷ = 245277433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245408509) 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, 355320 + ... + 356009.

It is an arithmetic number, because the mean of its divisors is an integer number (25607880).

Almost surely, 2^245408505 is an apocalyptic number.

It is an amenable number.

245408505 is a deficient number, since it is larger than the sum of its proper divisors (164317575).

245408505 is a wasteful number, since it uses less digits than its factorization.

245408505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711360.

The product of its (nonzero) digits is 32000, while the sum is 33.

The square root of 245408505 is about 15665.5196211297. The cubic root of 245408505 is about 626.0800567554.

The spelling of 245408505 in words is "two hundred forty-five million, four hundred eight thousand, five hundred five".