125241857 has 4 divisors (see below), whose sum is σ = 134875860. Its totient is φ = 115607856.

The previous prime is 125241833. The next prime is 125241869. The reversal of 125241857 is 758142521.

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 53348416 + 71893441 = 7304^2 + 8479^2 .

It is not a de Polignac number, because 125241857 - 2¹⁴ = 125225473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125241257) 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, 4816982 + ... + 4817007.

It is an arithmetic number, because the mean of its divisors is an integer number (33718965).

Almost surely, 2^125241857 is an apocalyptic number.

It is an amenable number.

125241857 is a deficient number, since it is larger than the sum of its proper divisors (9634003).

125241857 is an equidigital number, since it uses as much as digits as its factorization.

125241857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9634002.

The product of its digits is 22400, while the sum is 35.

The square root of 125241857 is about 11191.1508344763. The cubic root of 125241857 is about 500.3222682417.

The spelling of 125241857 in words is "one hundred twenty-five million, two hundred forty-one thousand, eight hundred fifty-seven".