125640546 has 16 divisors (see below), whose sum is σ = 251394624. Its totient is φ = 41861264.

The previous prime is 125640509. The next prime is 125640547. The reversal of 125640546 is 645046521.

It is not an unprimeable number, because it can be changed into a prime (125640547) 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 7 ways as a sum of consecutive naturals, for example, 18235 + ... + 24161.

It is an arithmetic number, because the mean of its divisors is an integer number (15712164).

Almost surely, 2^125640546 is an apocalyptic number.

125640546 is an abundant number, since it is smaller than the sum of its proper divisors (125754078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125640546 is a wasteful number, since it uses less digits than its factorization.

125640546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9465.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 125640546 is about 11208.9493709268. The cubic root of 125640546 is about 500.8526066308.

The spelling of 125640546 in words is "one hundred twenty-five million, six hundred forty thousand, five hundred forty-six".