125405841 has 8 divisors (see below), whose sum is σ = 182408544. Its totient is φ = 76003520.

The previous prime is 125405807. The next prime is 125405849. The reversal of 125405841 is 148504521.

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

It is a cyclic number.

It is not a de Polignac number, because 125405841 - 2⁷ = 125405713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125405799 and 125405808.

It is not an unprimeable number, because it can be changed into a prime (125405849) 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, 1900056 + ... + 1900121.

It is an arithmetic number, because the mean of its divisors is an integer number (22801068).

Almost surely, 2^125405841 is an apocalyptic number.

125405841 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125405841 is a deficient number, since it is larger than the sum of its proper divisors (57002703).

125405841 is a wasteful number, since it uses less digits than its factorization.

125405841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800191.

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 125405841 is about 11198.4749408123. The cubic root of 125405841 is about 500.5405367628.

It can be divided in two parts, 12540 and 5841, that added together give a palindrome (18381).

The spelling of 125405841 in words is "one hundred twenty-five million, four hundred five thousand, eight hundred forty-one".