1245225243545 has 16 divisors (see below), whose sum is σ = 1517471919360. Its totient is φ = 980783890944.

The previous prime is 1245225243541. The next prime is 1245225243553. The reversal of 1245225243545 is 5453425225421.

It is a cyclic number.

It is not a de Polignac number, because 1245225243545 - 2² = 1245225243541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1245225243496 and 1245225243505.

It is not an unprimeable number, because it can be changed into a prime (1245225243541) 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, 4325819 + ... + 4604688.

It is an arithmetic number, because the mean of its divisors is an integer number (94841994960).

Almost surely, 2^{1245225243545} is an apocalyptic number.

It is an amenable number.

1245225243545 is a deficient number, since it is larger than the sum of its proper divisors (272246675815).

1245225243545 is an equidigital number, since it uses as much as digits as its factorization.

1245225243545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8930944.

The product of its digits is 1920000, while the sum is 44.

The spelling of 1245225243545 in words is "one trillion, two hundred forty-five billion, two hundred twenty-five million, two hundred forty-three thousand, five hundred forty-five".