11445661561025 has 48 divisors (see below), whose sum is σ = 14906446426368. Its totient is φ = 8701255200000.

The previous prime is 11445661561021. The next prime is 11445661561057. The reversal of 11445661561025 is 52016516654411.

It is not a de Polignac number, because 11445661561025 - 2² = 11445661561021 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11445661561021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 182512175 + ... + 182574875.

It is an arithmetic number, because the mean of its divisors is an integer number (310550967216).

Almost surely, 2^{11445661561025} is an apocalyptic number.

It is an amenable number.

11445661561025 is a deficient number, since it is larger than the sum of its proper divisors (3460784865343).

11445661561025 is a wasteful number, since it uses less digits than its factorization.

11445661561025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64802 (or 64797 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 11445661561025 in words is "eleven trillion, four hundred forty-five billion, six hundred sixty-one million, five hundred sixty-one thousand, twenty-five".