125361205665 has 32 divisors (see below), whose sum is σ = 204890757120. Its totient is φ = 65422329024.

The previous prime is 125361205637. The next prime is 125361205693. The reversal of 125361205665 is 566502163521.

It is an interprime number because it is at equal distance from previous prime (125361205637) and next prime (125361205693).

It is not a de Polignac number, because 125361205665 - 2⁵ = 125361205633 is a prime.

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, 3668026 + ... + 3702044.

It is an arithmetic number, because the mean of its divisors is an integer number (6402836160).

Almost surely, 2^125361205665 is an apocalyptic number.

125361205665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125361205665 is a deficient number, since it is larger than the sum of its proper divisors (79529551455).

125361205665 is a wasteful number, since it uses less digits than its factorization.

125361205665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39301.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 125361205665 in words is "one hundred twenty-five billion, three hundred sixty-one million, two hundred five thousand, six hundred sixty-five".