125257786052 has 18 divisors (see below), whose sum is σ = 254989064862. Its totient is φ = 53681908224.

The previous prime is 125257786051. The next prime is 125257786061. The reversal of 125257786052 is 250687752521.

It can be written as a sum of positive squares in only one way, i.e., 75326095936 + 49931690116 = 274456^2 + 223454^2 .

It is not an unprimeable number, because it can be changed into a prime (125257786051) 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 5 ways as a sum of consecutive naturals, for example, 319534973 + ... + 319535364.

It is an arithmetic number, because the mean of its divisors is an integer number (14166059159).

Almost surely, 2^125257786052 is an apocalyptic number.

It is an amenable number.

125257786052 is an abundant number, since it is smaller than the sum of its proper divisors (129731278810).

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

125257786052 is a wasteful number, since it uses less digits than its factorization.

125257786052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639070355 (or 639070346 counting only the distinct ones).

The product of its (nonzero) digits is 2352000, while the sum is 50.

The spelling of 125257786052 in words is "one hundred twenty-five billion, two hundred fifty-seven million, seven hundred eighty-six thousand, fifty-two".