125042565 has 32 divisors (see below), whose sum is σ = 212509440. Its totient is φ = 62567424.

The previous prime is 125042551. The next prime is 125042587. The reversal of 125042565 is 565240521.

It is not a de Polignac number, because 125042565 - 2¹³ = 125034373 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 111387 + ... + 112503.

It is an arithmetic number, because the mean of its divisors is an integer number (6640920).

Almost surely, 2^125042565 is an apocalyptic number.

125042565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125042565 is a deficient number, since it is larger than the sum of its proper divisors (87466875).

125042565 is a wasteful number, since it uses less digits than its factorization.

125042565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581.

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 125042565 is about 11182.2432901453. The cubic root of 125042565 is about 500.0567468927.

The spelling of 125042565 in words is "one hundred twenty-five million, forty-two thousand, five hundred sixty-five".