125157443 has 4 divisors (see below), whose sum is σ = 126665448. Its totient is φ = 123649440.

The previous prime is 125157437. The next prime is 125157457. The reversal of 125157443 is 344751521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344751521 = 131 ⋅2631691.

It is a cyclic number.

It is not a de Polignac number, because 125157443 - 2¹⁰ = 125156419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125157413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753878 + ... + 754043.

It is an arithmetic number, because the mean of its divisors is an integer number (31666362).

Almost surely, 2^125157443 is an apocalyptic number.

125157443 is a deficient number, since it is larger than the sum of its proper divisors (1508005).

125157443 is an equidigital number, since it uses as much as digits as its factorization.

125157443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508004.

The product of its digits is 16800, while the sum is 32.

The square root of 125157443 is about 11187.3787367730. The cubic root of 125157443 is about 500.2098359254.

The spelling of 125157443 in words is "one hundred twenty-five million, one hundred fifty-seven thousand, four hundred forty-three".