125784045 has 12 divisors (see below), whose sum is σ = 218025756. Its totient is φ = 67084800.

The previous prime is 125784041. The next prime is 125784059. The reversal of 125784045 is 540487521.

125784045 is a `hidden beast` number, since 1 + 2 + 578 + 40 + 45 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 87665769 + 38118276 = 9363^2 + 6174^2 .

It is not a de Polignac number, because 125784045 - 2² = 125784041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125784041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1397556 + ... + 1397645.

It is an arithmetic number, because the mean of its divisors is an integer number (18168813).

Almost surely, 2^125784045 is an apocalyptic number.

125784045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125784045 is a deficient number, since it is larger than the sum of its proper divisors (92241711).

125784045 is a wasteful number, since it uses less digits than its factorization.

125784045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795212 (or 2795209 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 125784045 is about 11215.3486347951. The cubic root of 125784045 is about 501.0432152236.

The spelling of 125784045 in words is "one hundred twenty-five million, seven hundred eighty-four thousand, forty-five".