125502005 has 4 divisors (see below), whose sum is σ = 150602412. Its totient is φ = 100401600.

The previous prime is 125501969. The next prime is 125502023. The reversal of 125502005 is 500205521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71199844 + 54302161 = 8438^2 + 7369^2 .

It is not a de Polignac number, because 125502005 - 2⁶ = 125501941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12550196 + ... + 12550205.

It is an arithmetic number, because the mean of its divisors is an integer number (37650603).

Almost surely, 2^125502005 is an apocalyptic number.

It is an amenable number.

125502005 is a deficient number, since it is larger than the sum of its proper divisors (25100407).

125502005 is an equidigital number, since it uses as much as digits as its factorization.

125502005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25100406.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 125502005 is about 11202.7677383761. The cubic root of 125502005 is about 500.6684459618.

Adding to 125502005 its reverse (500205521), we get a palindrome (625707526).

The spelling of 125502005 in words is "one hundred twenty-five million, five hundred two thousand, five".