125856403 has 4 divisors (see below), whose sum is σ = 127102608. Its totient is φ = 124610200.

The previous prime is 125856343. The next prime is 125856431. The reversal of 125856403 is 304658521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125856403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125856443) 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, 622951 + ... + 623152.

It is an arithmetic number, because the mean of its divisors is an integer number (31775652).

Almost surely, 2^125856403 is an apocalyptic number.

125856403 is a deficient number, since it is larger than the sum of its proper divisors (1246205).

125856403 is a wasteful number, since it uses less digits than its factorization.

125856403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246204.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 125856403 is about 11218.5740181183. The cubic root of 125856403 is about 501.1392728100.

The spelling of 125856403 in words is "one hundred twenty-five million, eight hundred fifty-six thousand, four hundred three".