1245522005 has 16 divisors (see below), whose sum is σ = 1839540864. Its totient is φ = 788374080.

The previous prime is 1245521969. The next prime is 1245522011. The reversal of 1245522005 is 5002255421.

It is not a de Polignac number, because 1245522005 - 2⁶ = 1245521941 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, 1368251 + ... + 1369160.

It is an arithmetic number, because the mean of its divisors is an integer number (114971304).

Almost surely, 2^1245522005 is an apocalyptic number.

It is an amenable number.

1245522005 is a deficient number, since it is larger than the sum of its proper divisors (594018859).

1245522005 is a wasteful number, since it uses less digits than its factorization.

1245522005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737436.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 1245522005 is about 35291.9538280328. The cubic root of 1245522005 is about 1075.9294661895.

Adding to 1245522005 its reverse (5002255421), we get a palindrome (6247777426).

The spelling of 1245522005 in words is "one billion, two hundred forty-five million, five hundred twenty-two thousand, five".