125150281 has 4 divisors (see below), whose sum is σ = 125297172. Its totient is φ = 125003392.

The previous prime is 125150279. The next prime is 125150293. The reversal of 125150281 is 182051521.

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 105267600 + 19882681 = 10260^2 + 4459^2 .

It is a cyclic number.

It is not a de Polignac number, because 125150281 - 2¹ = 125150279 is a prime.

It is a super-3 number, since 3×125150281³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125150261) 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, 72160 + ... + 73873.

It is an arithmetic number, because the mean of its divisors is an integer number (31324293).

It is a 852-hyperperfect number.

Almost surely, 2^125150281 is an apocalyptic number.

It is an amenable number.

125150281 is a deficient number, since it is larger than the sum of its proper divisors (146891).

125150281 is an equidigital number, since it uses as much as digits as its factorization.

125150281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146890.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 125150281 is about 11187.0586393386. The cubic root of 125150281 is about 500.2002944202.

The spelling of 125150281 in words is "one hundred twenty-five million, one hundred fifty thousand, two hundred eighty-one".