125599005 has 60 divisors (see below), whose sum is σ = 261948060. Its totient is φ = 57407616.

The previous prime is 125598959. The next prime is 125599007. The reversal of 125599005 is 500995521.

125599005 is a `hidden beast` number, since 12 + 559 + 90 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71267364 + 54331641 = 8442^2 + 7371^2 .

It is not a de Polignac number, because 125599005 - 2⁷ = 125598877 is a prime.

It is a super-2 number, since 2×125599005² = 31550220113980050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125599007) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 16681 + ... + 23009.

It is an arithmetic number, because the mean of its divisors is an integer number (4365801).

Almost surely, 2^125599005 is an apocalyptic number.

125599005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125599005 is an abundant number, since it is smaller than the sum of its proper divisors (136349055).

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

125599005 is an equidigital number, since it uses as much as digits as its factorization.

125599005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6360 (or 6344 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 36.

The square root of 125599005 is about 11207.0961894685. The cubic root of 125599005 is about 500.7974009607.

The spelling of 125599005 in words is "one hundred twenty-five million, five hundred ninety-nine thousand, five".