71650025 has 6 divisors (see below), whose sum is σ = 88846062. Its totient is φ = 57320000.

The previous prime is 71650009. The next prime is 71650027. The reversal of 71650025 is 52005617.

It can be written as a sum of positive squares in 3 ways, for example, as 61504 + 71588521 = 248^2 + 8461^2 .

It is not a de Polignac number, because 71650025 - 2⁴ = 71650009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71649976 and 71650003.

It is not an unprimeable number, because it can be changed into a prime (71650027) 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, 1432976 + ... + 1433025.

It is an arithmetic number, because the mean of its divisors is an integer number (14807677).

Almost surely, 2^71650025 is an apocalyptic number.

It is an amenable number.

71650025 is a deficient number, since it is larger than the sum of its proper divisors (17196037).

71650025 is a wasteful number, since it uses less digits than its factorization.

71650025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866011 (or 2866006 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 71650025 is about 8464.6337782564. The cubic root of 71650025 is about 415.3416164251.

The spelling of 71650025 in words is "seventy-one million, six hundred fifty thousand, twenty-five".