125425257 has 4 divisors (see below), whose sum is σ = 167233680. Its totient is φ = 83616836.

The previous prime is 125425253. The next prime is 125425271. The reversal of 125425257 is 752524521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125425257 - 2² = 125425253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125425253) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20904207 + ... + 20904212.

It is an arithmetic number, because the mean of its divisors is an integer number (41808420).

Almost surely, 2^125425257 is an apocalyptic number.

It is an amenable number.

125425257 is a deficient number, since it is larger than the sum of its proper divisors (41808423).

125425257 is an equidigital number, since it uses as much as digits as its factorization.

125425257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41808422.

The product of its digits is 28000, while the sum is 33.

The square root of 125425257 is about 11199.3418110173. The cubic root of 125425257 is about 500.5663675467.

Adding to 125425257 its reverse (752524521), we get a palindrome (877949778).

The spelling of 125425257 in words is "one hundred twenty-five million, four hundred twenty-five thousand, two hundred fifty-seven".