125901403 has 4 divisors (see below), whose sum is σ = 126152208. Its totient is φ = 125650600.

The previous prime is 125901397. The next prime is 125901407. The reversal of 125901403 is 304109521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304109521 = 193 ⋅1575697.

It is a cyclic number.

It is not a de Polignac number, because 125901403 - 2¹⁷ = 125770331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125901407) 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, 124648 + ... + 125653.

It is an arithmetic number, because the mean of its divisors is an integer number (31538052).

Almost surely, 2^125901403 is an apocalyptic number.

125901403 is a deficient number, since it is larger than the sum of its proper divisors (250805).

125901403 is an equidigital number, since it uses as much as digits as its factorization.

125901403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250804.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 125901403 is about 11220.5794413658. The cubic root of 125901403 is about 501.1989931991.

The spelling of 125901403 in words is "one hundred twenty-five million, nine hundred one thousand, four hundred three".