47278125 has 54 divisors (see below), whose sum is σ = 87490494. Its totient is φ = 24600000.

The previous prime is 47278117. The next prime is 47278129. The reversal of 47278125 is 52187274.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 9 ways, for example, as 35354916 + 11923209 = 5946^2 + 3453^2 .

It is not a de Polignac number, because 47278125 - 2³ = 47278117 is a prime.

It is a super-2 number, since 2×47278125² = 4470442207031250, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

Its product of digits (31360) is a multiple of the sum of its prime divisors (49).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47278125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47278129) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1153105 + ... + 1153145.

Almost surely, 2^47278125 is an apocalyptic number.

47278125 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47278125 is a deficient number, since it is larger than the sum of its proper divisors (40212369).

47278125 is an frugal number, since it uses more digits than its factorization.

47278125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 49 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 47278125 is about 6875.9090308119. The cubic root of 47278125 is about 361.5930558233.

The spelling of 47278125 in words is "forty-seven million, two hundred seventy-eight thousand, one hundred twenty-five".