125999330865 has 32 divisors (see below), whose sum is σ = 215015834880. Its totient is φ = 62785050624.

The previous prime is 125999330839. The next prime is 125999330887. The reversal of 125999330865 is 568033999521.

It is not a de Polignac number, because 125999330865 - 2⁸ = 125999330609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125999330799 and 125999330808.

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, 1768405 + ... + 1838274.

It is an arithmetic number, because the mean of its divisors is an integer number (6719244840).

Almost surely, 2^125999330865 is an apocalyptic number.

125999330865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125999330865 is a deficient number, since it is larger than the sum of its proper divisors (89016504015).

125999330865 is a wasteful number, since it uses less digits than its factorization.

125999330865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3606841.

The product of its (nonzero) digits is 15746400, while the sum is 60.

The spelling of 125999330865 in words is "one hundred twenty-five billion, nine hundred ninety-nine million, three hundred thirty thousand, eight hundred sixty-five".