125555670 has 64 divisors (see below), whose sum is σ = 339007680. Its totient is φ = 33475680.

The previous prime is 125555627. The next prime is 125555671. The reversal of 125555670 is 76555521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125555671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19000 + ... + 24740.

It is an arithmetic number, because the mean of its divisors is an integer number (5296995).

Almost surely, 2^125555670 is an apocalyptic number.

125555670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 125555670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169503840).

125555670 is an abundant number, since it is smaller than the sum of its proper divisors (213452010).

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

125555670 is an frugal number, since it uses more digits than its factorization.

125555670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5769 (or 5751 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 125555670 is about 11205.1626494219. The cubic root of 125555670 is about 500.7397981908.

It can be divided in two parts, 12555 and 5670, that added together give a square (18225 = 135²).

The spelling of 125555670 in words is "one hundred twenty-five million, five hundred fifty-five thousand, six hundred seventy".