84147925 has 6 divisors (see below), whose sum is σ = 104343458. Its totient is φ = 67318320.

The previous prime is 84147923. The next prime is 84147929. The reversal of 84147925 is 52974148.

It can be written as a sum of positive squares in 3 ways, for example, as 9186961 + 74960964 = 3031^2 + 8658^2 .

It is not a de Polignac number, because 84147925 - 2¹ = 84147923 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84147923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1682934 + ... + 1682983.

Almost surely, 2^84147925 is an apocalyptic number.

It is an amenable number.

84147925 is a deficient number, since it is larger than the sum of its proper divisors (20195533).

84147925 is a wasteful number, since it uses less digits than its factorization.

84147925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365927 (or 3365922 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 84147925 is about 9173.2178105614. The cubic root of 84147925 is about 438.2088427410.

The spelling of 84147925 in words is "eighty-four million, one hundred forty-seven thousand, nine hundred twenty-five".