125247205156 has 6 divisors (see below), whose sum is σ = 219182609030. Its totient is φ = 62623602576.

The previous prime is 125247205133. The next prime is 125247205189. The reversal of 125247205156 is 651502742521.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 122612025600 + 2635179556 = 350160^2 + 51334^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15655900641 + ... + 15655900648.

Almost surely, 2^125247205156 is an apocalyptic number.

It is an amenable number.

125247205156 is a deficient number, since it is larger than the sum of its proper divisors (93935403874).

125247205156 is a wasteful number, since it uses less digits than its factorization.

125247205156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31311801293 (or 31311801291 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 40.

Adding to 125247205156 its reverse (651502742521), we get a palindrome (776749947677).

The spelling of 125247205156 in words is "one hundred twenty-five billion, two hundred forty-seven million, two hundred five thousand, one hundred fifty-six".