125658081 has 16 divisors (see below), whose sum is σ = 186390720. Its totient is φ = 83668320.

The previous prime is 125658079. The next prime is 125658103. The reversal of 125658081 is 180856521.

125658081 is a `hidden beast` number, since 12 + 565 + 8 + 0 + 81 = 666.

It is not a de Polignac number, because 125658081 - 2¹ = 125658079 is a prime.

It is a super-2 number, since 2×125658081² = 31579906641205122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125658011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23821 + ... + 28613.

It is an arithmetic number, because the mean of its divisors is an integer number (11649420).

Almost surely, 2^125658081 is an apocalyptic number.

It is an amenable number.

125658081 is a deficient number, since it is larger than the sum of its proper divisors (60732639).

125658081 is an equidigital number, since it uses as much as digits as its factorization.

125658081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5773 (or 5767 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The square root of 125658081 is about 11209.7315311295. The cubic root of 125658081 is about 500.8759060146.

The spelling of 125658081 in words is "one hundred twenty-five million, six hundred fifty-eight thousand, eighty-one".