125911457 has 4 divisors (see below), whose sum is σ = 143898816. Its totient is φ = 107924100.

The previous prime is 125911441. The next prime is 125911477. The reversal of 125911457 is 754119521.

It is a happy number.

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 125911457 - 2⁴ = 125911441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125911427) 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, 8993669 + ... + 8993682.

It is an arithmetic number, because the mean of its divisors is an integer number (35974704).

Almost surely, 2^125911457 is an apocalyptic number.

It is an amenable number.

125911457 is a deficient number, since it is larger than the sum of its proper divisors (17987359).

125911457 is an equidigital number, since it uses as much as digits as its factorization.

125911457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17987358.

The product of its digits is 12600, while the sum is 35.

The square root of 125911457 is about 11221.0274485004. The cubic root of 125911457 is about 501.2123341162.

The spelling of 125911457 in words is "one hundred twenty-five million, nine hundred eleven thousand, four hundred fifty-seven".