1667870842225 has 24 divisors (see below), whose sum is σ = 2466376963200. Its totient is φ = 1093957518720.

The previous prime is 1667870842219. The next prime is 1667870842259. The reversal of 1667870842225 is 5222480787661.

It is not a de Polignac number, because 1667870842225 - 2²⁷ = 1667736624497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1667870842225.

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, 207184900 + ... + 207192949.

It is an arithmetic number, because the mean of its divisors is an integer number (102765706800).

Almost surely, 2^{1667870842225} is an apocalyptic number.

It is an amenable number.

1667870842225 is a deficient number, since it is larger than the sum of its proper divisors (798506120975).

1667870842225 is a wasteful number, since it uses less digits than its factorization.

1667870842225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414377889 (or 414377884 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 1667870842225 in words is "one trillion, six hundred sixty-seven billion, eight hundred seventy million, eight hundred forty-two thousand, two hundred twenty-five".