125903555 has 8 divisors (see below), whose sum is σ = 155958144. Its totient is φ = 97473600.

The previous prime is 125903551. The next prime is 125903597. The reversal of 125903555 is 555309521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 125903555 - 2² = 125903551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125903551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 405986 + ... + 406295.

It is an arithmetic number, because the mean of its divisors is an integer number (19494768).

Almost surely, 2^125903555 is an apocalyptic number.

125903555 is a deficient number, since it is larger than the sum of its proper divisors (30054589).

125903555 is an equidigital number, since it uses as much as digits as its factorization.

125903555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812317.

The product of its (nonzero) digits is 33750, while the sum is 35.

The square root of 125903555 is about 11220.6753361819. The cubic root of 125903555 is about 501.2018488042.

The spelling of 125903555 in words is "one hundred twenty-five million, nine hundred three thousand, five hundred fifty-five".