125263565 has 16 divisors (see below), whose sum is σ = 181896192. Its totient is φ = 80841984.

The previous prime is 125263519. The next prime is 125263583. The reversal of 125263565 is 565362521.

It is a cyclic number.

It is not a de Polignac number, because 125263565 - 2¹⁰ = 125262541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 104669 + ... + 105858.

It is an arithmetic number, because the mean of its divisors is an integer number (11368512).

Almost surely, 2^125263565 is an apocalyptic number.

It is an amenable number.

125263565 is a deficient number, since it is larger than the sum of its proper divisors (56632627).

125263565 is a wasteful number, since it uses less digits than its factorization.

125263565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210556.

The product of its digits is 54000, while the sum is 35.

The square root of 125263565 is about 11192.1206658971. The cubic root of 125263565 is about 500.3511732969.

The spelling of 125263565 in words is "one hundred twenty-five million, two hundred sixty-three thousand, five hundred sixty-five".