1025913185009 has 32 divisors (see below), whose sum is σ = 1069981000704. Its totient is φ = 982922391360.

The previous prime is 1025913184997. The next prime is 1025913185027. The reversal of 1025913185009 is 9005813195201.

It is a cyclic number.

It is not a de Polignac number, because 1025913185009 - 2¹² = 1025913180913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025913185509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 691781582 + ... + 691783064.

It is an arithmetic number, because the mean of its divisors is an integer number (33436906272).

Almost surely, 2^{1025913185009} is an apocalyptic number.

It is an amenable number.

1025913185009 is a deficient number, since it is larger than the sum of its proper divisors (44067815695).

1025913185009 is a wasteful number, since it uses less digits than its factorization.

1025913185009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597.

The product of its (nonzero) digits is 97200, while the sum is 44.

The spelling of 1025913185009 in words is "one trillion, twenty-five billion, nine hundred thirteen million, one hundred eighty-five thousand, nine".