1242505510225 has 72 divisors (see below), whose sum is σ = 1871368671168. Its totient is φ = 801503923200.

The previous prime is 1242505510217. The next prime is 1242505510249. The reversal of 1242505510225 is 5220155052421.

It is not a de Polignac number, because 1242505510225 - 2³ = 1242505510217 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 138621594 + ... + 138630556.

It is an arithmetic number, because the mean of its divisors is an integer number (25991231544).

Almost surely, 2^{1242505510225} is an apocalyptic number.

It is an amenable number.

1242505510225 is a deficient number, since it is larger than the sum of its proper divisors (628863160943).

1242505510225 is a wasteful number, since it uses less digits than its factorization.

1242505510225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11755 (or 11733 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 1242505510225 in words is "one trillion, two hundred forty-two billion, five hundred five million, five hundred ten thousand, two hundred twenty-five".