125213565 has 8 divisors (see below), whose sum is σ = 200341728. Its totient is φ = 66780560.

The previous prime is 125213537. The next prime is 125213567. The reversal of 125213565 is 565312521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125213565 - 2¹⁰ = 125212541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125213567) 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 7 ways as a sum of consecutive naturals, for example, 4173771 + ... + 4173800.

It is an arithmetic number, because the mean of its divisors is an integer number (25042716).

Almost surely, 2^125213565 is an apocalyptic number.

125213565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125213565 is a deficient number, since it is larger than the sum of its proper divisors (75128163).

125213565 is an equidigital number, since it uses as much as digits as its factorization.

125213565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8347579.

The product of its digits is 9000, while the sum is 30.

The square root of 125213565 is about 11189.8867286492. The cubic root of 125213565 is about 500.2845913182.

The spelling of 125213565 in words is "one hundred twenty-five million, two hundred thirteen thousand, five hundred sixty-five".