125856645 has 8 divisors (see below), whose sum is σ = 201370656. Its totient is φ = 67123536.

The previous prime is 125856641. The next prime is 125856649. The reversal of 125856645 is 546658521.

It is an interprime number because it is at equal distance from previous prime (125856641) and next prime (125856649).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125856645 - 2² = 125856641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125856597 and 125856606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125856641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4195207 + ... + 4195236.

It is an arithmetic number, because the mean of its divisors is an integer number (25171332).

Almost surely, 2^125856645 is an apocalyptic number.

125856645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125856645 is a deficient number, since it is larger than the sum of its proper divisors (75514011).

125856645 is an equidigital number, since it uses as much as digits as its factorization.

125856645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8390451.

The product of its digits is 288000, while the sum is 42.

The square root of 125856645 is about 11218.5848037977. The cubic root of 125856645 is about 501.1395940110.

The spelling of 125856645 in words is "one hundred twenty-five million, eight hundred fifty-six thousand, six hundred forty-five".