511665241340125 has 32 divisors (see below), whose sum is σ = 666325497187584. Its totient is φ = 391532864184000.

The previous prime is 511665241340117. The next prime is 511665241340189. The reversal of 511665241340125 is 521043142566115.

It is not a de Polignac number, because 511665241340125 - 2³ = 511665241340117 is a prime.

It is a super-2 number, since 2×511665241340125² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625683007 + ... + 626500243.

It is an arithmetic number, because the mean of its divisors is an integer number (20822671787112).

Almost surely, 2^{511665241340125} is an apocalyptic number.

It is an amenable number.

511665241340125 is a deficient number, since it is larger than the sum of its proper divisors (154660255847459).

511665241340125 is a wasteful number, since it uses less digits than its factorization.

511665241340125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035046 (or 1035036 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 511665241340125 in words is "five hundred eleven trillion, six hundred sixty-five billion, two hundred forty-one million, three hundred forty thousand, one hundred twenty-five".