125136045 has 12 divisors (see below), whose sum is σ = 216902556. Its totient is φ = 66739200.

The previous prime is 125136041. The next prime is 125136049. The reversal of 125136045 is 540631521.

125136045 is a `hidden beast` number, since 1 + 2 + 51 + 3 + 604 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (125136041) and next prime (125136049).

It can be written as a sum of positive squares in 2 ways, for example, as 61168041 + 63968004 = 7821^2 + 7998^2 .

It is not a de Polignac number, because 125136045 - 2² = 125136041 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125136041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1390356 + ... + 1390445.

It is an arithmetic number, because the mean of its divisors is an integer number (18075213).

Almost surely, 2^125136045 is an apocalyptic number.

125136045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125136045 is a deficient number, since it is larger than the sum of its proper divisors (91766511).

125136045 is a wasteful number, since it uses less digits than its factorization.

125136045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2780812 (or 2780809 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 125136045 is about 11186.4223503317. The cubic root of 125136045 is about 500.1813275660.

Adding to 125136045 its reverse (540631521), we get a palindrome (665767566).

The spelling of 125136045 in words is "one hundred twenty-five million, one hundred thirty-six thousand, forty-five".