9251985425 has 6 divisors (see below), whose sum is σ = 11472461958. Its totient is φ = 7401588320.

The previous prime is 9251985397. The next prime is 9251985469. The reversal of 9251985425 is 5245891529.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 32913169 + 9219072256 = 5737^2 + 96016^2 .

It is not a de Polignac number, because 9251985425 - 2¹⁸ = 9251723281 is a prime.

It is a Duffinian number.

It is a Curzon 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, 185039684 + ... + 185039733.

It is an arithmetic number, because the mean of its divisors is an integer number (1912076993).

Almost surely, 2^9251985425 is an apocalyptic number.

It is an amenable number.

9251985425 is a deficient number, since it is larger than the sum of its proper divisors (2220476533).

9251985425 is a wasteful number, since it uses less digits than its factorization.

9251985425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370079427 (or 370079422 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 50.

The square root of 9251985425 is about 96187.2414876318. The cubic root of 9251985425 is about 2099.3184050276.

The spelling of 9251985425 in words is "nine billion, two hundred fifty-one million, nine hundred eighty-five thousand, four hundred twenty-five".