125415401 has 4 divisors (see below), whose sum is σ = 129740100. Its totient is φ = 121090704.

The previous prime is 125415379. The next prime is 125415431. The reversal of 125415401 is 104514521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 101989801 + 23425600 = 10099^2 + 4840^2 .

It is a cyclic number.

It is not a de Polignac number, because 125415401 - 2⁶ = 125415337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125415431) 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 3 ways as a sum of consecutive naturals, for example, 2162306 + ... + 2162363.

It is an arithmetic number, because the mean of its divisors is an integer number (32435025).

Almost surely, 2^125415401 is an apocalyptic number.

It is an amenable number.

125415401 is a deficient number, since it is larger than the sum of its proper divisors (4324699).

125415401 is an equidigital number, since it uses as much as digits as its factorization.

125415401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4324698.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 125415401 is about 11198.9017765136. The cubic root of 125415401 is about 500.5532555907.

Adding to 125415401 its reverse (104514521), we get a palindrome (229929922).

The spelling of 125415401 in words is "one hundred twenty-five million, four hundred fifteen thousand, four hundred one".