125079505 has 4 divisors (see below), whose sum is σ = 150095412. Its totient is φ = 100063600.

The previous prime is 125079503. The next prime is 125079533. The reversal of 125079505 is 505970521.

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 14493249 + 110586256 = 3807^2 + 10516^2 .

It is not a de Polignac number, because 125079505 - 2¹ = 125079503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125079503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12507946 + ... + 12507955.

It is an arithmetic number, because the mean of its divisors is an integer number (37523853).

Almost surely, 2^125079505 is an apocalyptic number.

It is an amenable number.

125079505 is a deficient number, since it is larger than the sum of its proper divisors (25015907).

125079505 is an equidigital number, since it uses as much as digits as its factorization.

125079505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25015906.

The product of its (nonzero) digits is 15750, while the sum is 34.

The square root of 125079505 is about 11183.8948939982. The cubic root of 125079505 is about 500.1059841998.

The spelling of 125079505 in words is "one hundred twenty-five million, seventy-nine thousand, five hundred five".