125257051 has 4 divisors (see below), whose sum is σ = 125296704. Its totient is φ = 125217400.

The previous prime is 125257049. The next prime is 125257127. The reversal of 125257051 is 150752521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125257051 - 2¹ = 125257049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125257001) 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, 14635 + ... + 21556.

It is an arithmetic number, because the mean of its divisors is an integer number (31324176).

Almost surely, 2^125257051 is an apocalyptic number.

125257051 is a deficient number, since it is larger than the sum of its proper divisors (39653).

125257051 is an equidigital number, since it uses as much as digits as its factorization.

125257051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39652.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 125257051 is about 11191.8296538144. The cubic root of 125257051 is about 500.3425000006.

The spelling of 125257051 in words is "one hundred twenty-five million, two hundred fifty-seven thousand, fifty-one".