125744505 has 16 divisors (see below), whose sum is σ = 205473024. Its totient is φ = 65636480.

The previous prime is 125744503. The next prime is 125744533. The reversal of 125744505 is 505447521.

It is not a de Polignac number, because 125744505 - 2¹ = 125744503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125744503) 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 15 ways as a sum of consecutive naturals, for example, 88476 + ... + 89885.

It is an arithmetic number, because the mean of its divisors is an integer number (12842064).

Almost surely, 2^125744505 is an apocalyptic number.

125744505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125744505 is a deficient number, since it is larger than the sum of its proper divisors (79728519).

125744505 is a wasteful number, since it uses less digits than its factorization.

125744505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178416.

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 125744505 is about 11213.5857333861. The cubic root of 125744505 is about 500.9907090281.

The spelling of 125744505 in words is "one hundred twenty-five million, seven hundred forty-four thousand, five hundred five".