125353643 has 4 divisors (see below), whose sum is σ = 128268888. Its totient is φ = 122438400.

The previous prime is 125353633. The next prime is 125353651. The reversal of 125353643 is 346353521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346353521 = 1301 ⋅266221.

It is a cyclic number.

It is not a de Polignac number, because 125353643 - 2¹² = 125349547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125353633) 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, 1457558 + ... + 1457643.

It is an arithmetic number, because the mean of its divisors is an integer number (32067222).

Almost surely, 2^125353643 is an apocalyptic number.

125353643 is a deficient number, since it is larger than the sum of its proper divisors (2915245).

125353643 is an equidigital number, since it uses as much as digits as its factorization.

125353643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915244.

The product of its digits is 32400, while the sum is 32.

The square root of 125353643 is about 11196.1441130418. The cubic root of 125353643 is about 500.4710800278.

The spelling of 125353643 in words is "one hundred twenty-five million, three hundred fifty-three thousand, six hundred forty-three".