125554403 has 16 divisors (see below), whose sum is σ = 138801600. Its totient is φ = 112854144.

The previous prime is 125554399. The next prime is 125554417. The reversal of 125554403 is 304455521.

It is not a de Polignac number, because 125554403 - 2² = 125554399 is a prime.

It is a super-2 number, since 2×125554403² = 31527816225372818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125551403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102050 + ... + 103272.

It is an arithmetic number, because the mean of its divisors is an integer number (8675100).

Almost surely, 2^125554403 is an apocalyptic number.

125554403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

125554403 is a deficient number, since it is larger than the sum of its proper divisors (13247197).

125554403 is a wasteful number, since it uses less digits than its factorization.

125554403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 125554403 is about 11205.1061128398. The cubic root of 125554403 is about 500.7381138397.

The spelling of 125554403 in words is "one hundred twenty-five million, five hundred fifty-four thousand, four hundred three".