9971425 has 6 divisors (see below), whose sum is σ = 12364598. Its totient is φ = 7977120.

The previous prime is 9971417. The next prime is 9971441. The reversal of 9971425 is 5241799.

It can be written as a sum of positive squares in 3 ways, for example, as 478864 + 9492561 = 692^2 + 3081^2 .

It is not a de Polignac number, because 9971425 - 2³ = 9971417 is a prime.

It is a Duffinian number.

9971425 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 199404 + ... + 199453.

Almost surely, 2^9971425 is an apocalyptic number.

It is an amenable number.

9971425 is a deficient number, since it is larger than the sum of its proper divisors (2393173).

9971425 is a wasteful number, since it uses less digits than its factorization.

9971425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398867 (or 398862 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The square root of 9971425 is about 3157.7563237210. The cubic root of 9971425 is about 215.2380633256.

The spelling of 9971425 in words is "nine million, nine hundred seventy-one thousand, four hundred twenty-five".