125401005 has 24 divisors (see below), whose sum is σ = 218044320. Its totient is φ = 66670560.

The previous prime is 125400973. The next prime is 125401009. The reversal of 125401005 is 500104521.

It is not a de Polignac number, because 125401005 - 2⁵ = 125400973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125401009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10686 + ... + 19104.

It is an arithmetic number, because the mean of its divisors is an integer number (9085180).

Almost surely, 2^125401005 is an apocalyptic number.

125401005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125401005 is a deficient number, since it is larger than the sum of its proper divisors (92643315).

125401005 is a wasteful number, since it uses less digits than its factorization.

125401005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8761 (or 8758 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 125401005 is about 11198.2590164722. The cubic root of 125401005 is about 500.5341025990.

Adding to 125401005 its reverse (500104521), we get a palindrome (625505526).

The spelling of 125401005 in words is "one hundred twenty-five million, four hundred one thousand, five".