1670505606525 has 24 divisors (see below), whose sum is σ = 3156460118464. Its totient is φ = 763659705600.

The previous prime is 1670505606521. The next prime is 1670505606541. The reversal of 1670505606525 is 5256065050761.

It is a happy number.

It is not a de Polignac number, because 1670505606525 - 2² = 1670505606521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670505606521) 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 23 ways as a sum of consecutive naturals, for example, 1590957196 + ... + 1590958245.

Almost surely, 2^{1670505606525} is an apocalyptic number.

1670505606525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1670505606525 is a deficient number, since it is larger than the sum of its proper divisors (1485954511939).

1670505606525 is a wasteful number, since it uses less digits than its factorization.

1670505606525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181915461 (or 3181915456 counting only the distinct ones).

The product of its (nonzero) digits is 1890000, while the sum is 48.

The spelling of 1670505606525 in words is "one trillion, six hundred seventy billion, five hundred five million, six hundred six thousand, five hundred twenty-five".