1025145566123 has 16 divisors (see below), whose sum is σ = 1212311485440. Its totient is φ = 848617995456.

The previous prime is 1025145566111. The next prime is 1025145566147. The reversal of 1025145566123 is 3216655415201.

It is not a de Polignac number, because 1025145566123 - 2³⁰ = 1024071824299 is a prime.

It is a super-2 number, since 2×1025145566123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1025145566153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19106915 + ... + 19160492.

It is an arithmetic number, because the mean of its divisors is an integer number (75769467840).

Almost surely, 2^{1025145566123} is an apocalyptic number.

1025145566123 is a deficient number, since it is larger than the sum of its proper divisors (187165919317).

1025145566123 is an equidigital number, since it uses as much as digits as its factorization.

1025145566123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38267546.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 1025145566123 in words is "one trillion, twenty-five billion, one hundred forty-five million, five hundred sixty-six thousand, one hundred twenty-three".