125497780 has 24 divisors (see below), whose sum is σ = 263837952. Its totient is φ = 50143392.

The previous prime is 125497777. The next prime is 125497781. The reversal of 125497780 is 87794521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125497781) 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, 18309 + ... + 24211.

It is an arithmetic number, because the mean of its divisors is an integer number (10993248).

Almost surely, 2^125497780 is an apocalyptic number.

125497780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

125497780 is an abundant number, since it is smaller than the sum of its proper divisors (138340172).

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

125497780 is a wasteful number, since it uses less digits than its factorization.

125497780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6975 (or 6973 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 125497780 is about 11202.5791673168. The cubic root of 125497780 is about 500.6628275975.

The spelling of 125497780 in words is "one hundred twenty-five million, four hundred ninety-seven thousand, seven hundred eighty".