125402440105 has 16 divisors (see below), whose sum is σ = 151595297280. Its totient is φ = 99582050752.

The previous prime is 125402440063. The next prime is 125402440123. The reversal of 125402440105 is 501044204521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125402440105 is a prime.

It is a super-2 number, since 2×125402440105² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 495927 + ... + 704803.

It is an arithmetic number, because the mean of its divisors is an integer number (9474706080).

Almost surely, 2^125402440105 is an apocalyptic number.

It is an amenable number.

125402440105 is a deficient number, since it is larger than the sum of its proper divisors (26192857175).

125402440105 is a wasteful number, since it uses less digits than its factorization.

125402440105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209768.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 125402440105 its reverse (501044204521), we get a palindrome (626446644626).

The spelling of 125402440105 in words is "one hundred twenty-five billion, four hundred two million, four hundred forty thousand, one hundred five".