125210257 has 16 divisors (see below), whose sum is σ = 131646592. Its totient is φ = 118972800.

The previous prime is 125210251. The next prime is 125210279. The reversal of 125210257 is 752012521.

It is a cyclic number.

It is not a de Polignac number, because 125210257 - 2¹⁵ = 125177489 is a prime.

It is a super-3 number, since 3×125210257³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (125210251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407698 + ... + 408004.

It is an arithmetic number, because the mean of its divisors is an integer number (8227912).

Almost surely, 2^125210257 is an apocalyptic number.

It is an amenable number.

125210257 is a deficient number, since it is larger than the sum of its proper divisors (6436335).

125210257 is a wasteful number, since it uses less digits than its factorization.

125210257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 125210257 is about 11189.7389156316. The cubic root of 125210257 is about 500.2801856294.

Adding to 125210257 its reverse (752012521), we get a palindrome (877222778).

The spelling of 125210257 in words is "one hundred twenty-five million, two hundred ten thousand, two hundred fifty-seven".