125001061 has 4 divisors (see below), whose sum is σ = 125023500. Its totient is φ = 124978624.

The previous prime is 125001053. The next prime is 125001103. The reversal of 125001061 is 160100521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 118396161 + 6604900 = 10881^2 + 2570^2 .

It is a cyclic number.

It is not a de Polignac number, because 125001061 - 2³ = 125001053 is a prime.

It is a super-2 number, since 2×125001061² = 31250530502251442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125005061) 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 3 ways as a sum of consecutive naturals, for example, 4215 + ... + 16363.

It is an arithmetic number, because the mean of its divisors is an integer number (31255875).

Almost surely, 2^125001061 is an apocalyptic number.

It is an amenable number.

125001061 is a deficient number, since it is larger than the sum of its proper divisors (22439).

125001061 is a wasteful number, since it uses less digits than its factorization.

125001061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22438.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 125001061 is about 11180.3873367607. The cubic root of 125001061 is about 500.0014146627.

Adding to 125001061 its reverse (160100521), we get a palindrome (285101582).

The spelling of 125001061 in words is "one hundred twenty-five million, one thousand, sixty-one".