125403457 has 4 divisors (see below), whose sum is σ = 125455536. Its totient is φ = 125351380.

The previous prime is 125403451. The next prime is 125403469. The reversal of 125403457 is 754304521.

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, and also an emirpimes, since its reverse is a distinct semiprime: 754304521 = 283 ⋅2665387.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125403457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125403451) 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, 22243 + ... + 27304.

It is an arithmetic number, because the mean of its divisors is an integer number (31363884).

Almost surely, 2^125403457 is an apocalyptic number.

It is an amenable number.

125403457 is a deficient number, since it is larger than the sum of its proper divisors (52079).

125403457 is an equidigital number, since it uses as much as digits as its factorization.

125403457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52078.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 125403457 is about 11198.3684972410. The cubic root of 125403457 is about 500.5373649376.

Adding to 125403457 its reverse (754304521), we get a palindrome (879707978).

The spelling of 125403457 in words is "one hundred twenty-five million, four hundred three thousand, four hundred fifty-seven".