71428125 has 48 divisors (see below), whose sum is σ = 125616960. Its totient is φ = 36000000.

The previous prime is 71428121. The next prime is 71428127. The reversal of 71428125 is 52182417.

It is not a de Polignac number, because 71428125 - 2² = 71428121 is a prime.

71428125 is a Rhonda number in base 10.

Its product of digits (4480) is a multiple of the sum of its prime factors (448).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71428092 and 71428101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71428121) 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 47 ways as a sum of consecutive naturals, for example, 177925 + ... + 178325.

It is an arithmetic number, because the mean of its divisors is an integer number (2617020).

Almost surely, 2^71428125 is an apocalyptic number.

71428125 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

71428125 is a deficient number, since it is larger than the sum of its proper divisors (54188835).

71428125 is an equidigital number, since it uses as much as digits as its factorization.

71428125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 428 counting only the distinct ones).

The product of its digits is 4480, while the sum is 30.

The square root of 71428125 is about 8451.5161361734. The cubic root of 71428125 is about 414.9124022787.

The spelling of 71428125 in words is "seventy-one million, four hundred twenty-eight thousand, one hundred twenty-five".