125257459 has 4 divisors (see below), whose sum is σ = 126406720. Its totient is φ = 124108200.

The previous prime is 125257439. The next prime is 125257463. The reversal of 125257459 is 954752521.

It is a happy number.

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 125257459 - 2⁷ = 125257331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125257439) 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, 574467 + ... + 574684.

It is an arithmetic number, because the mean of its divisors is an integer number (31601680).

Almost surely, 2^125257459 is an apocalyptic number.

125257459 is a deficient number, since it is larger than the sum of its proper divisors (1149261).

125257459 is a wasteful number, since it uses less digits than its factorization.

125257459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149260.

The product of its digits is 126000, while the sum is 40.

The square root of 125257459 is about 11191.8478813822. The cubic root of 125257459 is about 500.3430432555.

The spelling of 125257459 in words is "one hundred twenty-five million, two hundred fifty-seven thousand, four hundred fifty-nine".