245540245 has 16 divisors (see below), whose sum is σ = 308997360. Its totient is φ = 187052544.

The previous prime is 245540237. The next prime is 245540257. The reversal of 245540245 is 542045542.

245540245 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 30008484 + 215531761 = 5478^2 + 14681^2 .

It is a cyclic number.

It is not a de Polignac number, because 245540245 - 2³ = 245540237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1014 + ... + 22183.

It is an arithmetic number, because the mean of its divisors is an integer number (19312335).

Almost surely, 2^245540245 is an apocalyptic number.

It is an amenable number.

245540245 is a deficient number, since it is larger than the sum of its proper divisors (63457115).

245540245 is a wasteful number, since it uses less digits than its factorization.

245540245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23304.

The product of its (nonzero) digits is 32000, while the sum is 31.

The square root of 245540245 is about 15669.7238329206. The cubic root of 245540245 is about 626.1920673153.

Adding to 245540245 its reverse (542045542), we get a palindrome (787585787).

The spelling of 245540245 in words is "two hundred forty-five million, five hundred forty thousand, two hundred forty-five".