1667725417245 has 32 divisors (see below), whose sum is σ = 2680997760000. Its totient is φ = 885243193344.

The previous prime is 1667725417219. The next prime is 1667725417343. The reversal of 1667725417245 is 5427145277661.

It is not a de Polignac number, because 1667725417245 - 2⁵ = 1667725417213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13751131 + ... + 13871879.

It is an arithmetic number, because the mean of its divisors is an integer number (83781180000).

Almost surely, 2^{1667725417245} is an apocalyptic number.

1667725417245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1667725417245 is a deficient number, since it is larger than the sum of its proper divisors (1013272342755).

1667725417245 is a wasteful number, since it uses less digits than its factorization.

1667725417245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125109.

The product of its digits is 19756800, while the sum is 57.

The spelling of 1667725417245 in words is "one trillion, six hundred sixty-seven billion, seven hundred twenty-five million, four hundred seventeen thousand, two hundred forty-five".