125001812 has 12 divisors (see below), whose sum is σ = 235580436. Its totient is φ = 57693120.

The previous prime is 125001797. The next prime is 125001829. The reversal of 125001812 is 218100521.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 60777616 + 64224196 = 7796^2 + 8014^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1201889 + ... + 1201992.

It is an arithmetic number, because the mean of its divisors is an integer number (19631703).

Almost surely, 2^125001812 is an apocalyptic number.

It is an amenable number.

125001812 is a deficient number, since it is larger than the sum of its proper divisors (110578624).

125001812 is a wasteful number, since it uses less digits than its factorization.

125001812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403898 (or 2403896 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 125001812 is about 11180.4209223088. The cubic root of 125001812 is about 500.0024159883.

The spelling of 125001812 in words is "one hundred twenty-five million, one thousand, eight hundred twelve".