125050005 has 18 divisors (see below), whose sum is σ = 216883446. Its totient is φ = 66653328.

The previous prime is 125049983. The next prime is 125050007. The reversal of 125050005 is 500050521.

It can be written as a sum of positive squares in only one way, i.e., 100040004 + 25010001 = 10002^2 + 5001^2 .

It is not a de Polignac number, because 125050005 - 2¹⁵ = 125017237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 125050005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125050007) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 74182 + ... + 75848.

Almost surely, 2^125050005 is an apocalyptic number.

125050005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

125050005 is a deficient number, since it is larger than the sum of its proper divisors (91833441).

125050005 is an frugal number, since it uses more digits than its factorization.

125050005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3345 (or 1675 counting only the distinct ones).

The product of its (nonzero) digits is 250, while the sum is 18.

The square root of 125050005 is about 11182.5759554764. The cubic root of 125050005 is about 500.0666644446.

The spelling of 125050005 in words is "one hundred twenty-five million, fifty thousand, five".