245311245 has 12 divisors (see below), whose sum is σ = 425206236. Its totient is φ = 130832640.

The previous prime is 245311243. The next prime is 245311271. The reversal of 245311245 is 542113542.

245311245 is a `hidden beast` number, since 2 + 4 + 531 + 124 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31069476 + 214241769 = 5574^2 + 14637^2 .

It is not a de Polignac number, because 245311245 - 2¹ = 245311243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245311243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2725636 + ... + 2725725.

It is an arithmetic number, because the mean of its divisors is an integer number (35433853).

Almost surely, 2^245311245 is an apocalyptic number.

It is an amenable number.

245311245 is a deficient number, since it is larger than the sum of its proper divisors (179894991).

245311245 is a wasteful number, since it uses less digits than its factorization.

245311245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451372 (or 5451369 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 245311245 is about 15662.4150436642. The cubic root of 245311245 is about 625.9973367312.

Adding to 245311245 its reverse (542113542), we get a palindrome (787424787).

The spelling of 245311245 in words is "two hundred forty-five million, three hundred eleven thousand, two hundred forty-five".