1245230565 has 16 divisors (see below), whose sum is σ = 2061072000. Its totient is φ = 641221952.

The previous prime is 1245230561. The next prime is 1245230579. The reversal of 1245230565 is 5650325421.

It is a cyclic number.

It is not a de Polignac number, because 1245230565 - 2² = 1245230561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245230561) 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, 1430865 + ... + 1431734.

It is an arithmetic number, because the mean of its divisors is an integer number (128817000).

Almost surely, 2^1245230565 is an apocalyptic number.

1245230565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245230565 is a deficient number, since it is larger than the sum of its proper divisors (815841435).

1245230565 is a wasteful number, since it uses less digits than its factorization.

1245230565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2862636.

The product of its (nonzero) digits is 36000, while the sum is 33.

The square root of 1245230565 is about 35287.8245999948. The cubic root of 1245230565 is about 1075.8455406432.

Adding to 1245230565 its reverse (5650325421), we get a palindrome (6895555986).

The spelling of 1245230565 in words is "one billion, two hundred forty-five million, two hundred thirty thousand, five hundred sixty-five".