125105001 has 16 divisors (see below), whose sum is σ = 191247744. Its totient is φ = 71259264.

The previous prime is 125104999. The next prime is 125105003. The reversal of 125105001 is 100501521.

It is an interprime number because it is at equal distance from previous prime (125104999) and next prime (125105003).

It is not a de Polignac number, because 125105001 - 2¹ = 125104999 is a prime.

It is a super-2 number, since 2×125105001² = 31302522550420002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125105003) 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, 2740 + ... + 16053.

It is an arithmetic number, because the mean of its divisors is an integer number (11952984).

Almost surely, 2^125105001 is an apocalyptic number.

It is an amenable number.

125105001 is a deficient number, since it is larger than the sum of its proper divisors (66142743).

125105001 is a wasteful number, since it uses less digits than its factorization.

125105001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19120.

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 125105001 is about 11185.0346892623. The cubic root of 125105001 is about 500.1399621509.

Adding to 125105001 its reverse (100501521), we get a palindrome (225606522).

The spelling of 125105001 in words is "one hundred twenty-five million, one hundred five thousand, one".