2016666201525 has 24 divisors (see below), whose sum is σ = 3415543932864. Its totient is φ = 1049322249600.

The previous prime is 2016666201491. The next prime is 2016666201541. The reversal of 2016666201525 is 5251026666102.

It is a happy number.

It is not a de Polignac number, because 2016666201525 - 2⁷ = 2016666201397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 327910129 + ... + 327916278.

It is an arithmetic number, because the mean of its divisors is an integer number (142314330536).

Almost surely, 2^{2016666201525} is an apocalyptic number.

2016666201525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2016666201525 is a deficient number, since it is larger than the sum of its proper divisors (1398877731339).

2016666201525 is a wasteful number, since it uses less digits than its factorization.

2016666201525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655826461 (or 655826456 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 2016666201525 in words is "two trillion, sixteen billion, six hundred sixty-six million, two hundred one thousand, five hundred twenty-five".