125650780 has 24 divisors (see below), whose sum is σ = 264080880. Its totient is φ = 50219520.

The previous prime is 125650753. The next prime is 125650829. The reversal of 125650780 is 87056521.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 40111 + ... + 43129.

It is an arithmetic number, because the mean of its divisors is an integer number (11003370).

Almost surely, 2^125650780 is an apocalyptic number.

125650780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125650780 is an abundant number, since it is smaller than the sum of its proper divisors (138430100).

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

125650780 is a wasteful number, since it uses less digits than its factorization.

125650780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5109 (or 5107 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 125650780 is about 11209.4058718560. The cubic root of 125650780 is about 500.8662051773.

It can be divided in two parts, 125650 and 780, that multiplied together give a triangular number (98007000 = T₁₄₀₀₀).

The spelling of 125650780 in words is "one hundred twenty-five million, six hundred fifty thousand, seven hundred eighty".