125550505 has 8 divisors (see below), whose sum is σ = 153130824. Its totient is φ = 98793600.

The previous prime is 125550479. The next prime is 125550517. The reversal of 125550505 is 505055521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 826281 + 124724224 = 909^2 + 11168^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125550505 - 2⁵ = 125550473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205516 + ... + 206125.

It is an arithmetic number, because the mean of its divisors is an integer number (19141353).

Almost surely, 2^125550505 is an apocalyptic number.

It is an amenable number.

125550505 is a deficient number, since it is larger than the sum of its proper divisors (27580319).

125550505 is an equidigital number, since it uses as much as digits as its factorization.

125550505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411707.

The product of its (nonzero) digits is 6250, while the sum is 28.

The square root of 125550505 is about 11204.9321729317. The cubic root of 125550505 is about 500.7329317638.

The spelling of 125550505 in words is "one hundred twenty-five million, five hundred fifty thousand, five hundred five".