125344505 has 24 divisors (see below), whose sum is σ = 178059336. Its totient is φ = 84142080.

The previous prime is 125344489. The next prime is 125344529. The reversal of 125344505 is 505443521.

It can be written as a sum of positive squares in 4 ways, for example, as 6512704 + 118831801 = 2552^2 + 10901^2 .

It is not a de Polignac number, because 125344505 - 2⁴ = 125344489 is a prime.

It is a super-2 number, since 2×125344505² = 31422489867390050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104 + ... + 15833.

It is an arithmetic number, because the mean of its divisors is an integer number (7419139).

Almost surely, 2^125344505 is an apocalyptic number.

It is an amenable number.

125344505 is a deficient number, since it is larger than the sum of its proper divisors (52714831).

125344505 is a wasteful number, since it uses less digits than its factorization.

125344505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15977 (or 15966 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 125344505 is about 11195.7360186814. The cubic root of 125344505 is about 500.4589186585.

The spelling of 125344505 in words is "one hundred twenty-five million, three hundred forty-four thousand, five hundred five".