247490425 has 36 divisors (see below), whose sum is σ = 384477996. Its totient is φ = 156643200.

The previous prime is 247490417. The next prime is 247490431. The reversal of 247490425 is 524094742.

It can be written as a sum of positive squares in 6 ways, for example, as 8602489 + 238887936 = 2933^2 + 15456^2 .

It is not a de Polignac number, because 247490425 - 2³ = 247490417 is a prime.

It is a super-2 number, since 2×247490425² = 122503020933361250, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8155 + ... + 23695.

Almost surely, 2^247490425 is an apocalyptic number.

247490425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

247490425 is a deficient number, since it is larger than the sum of its proper divisors (136987571).

247490425 is a wasteful number, since it uses less digits than its factorization.

247490425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15578 (or 15566 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 247490425 is about 15731.8284061326. The cubic root of 247490425 is about 627.8455211540.

The spelling of 247490425 in words is "two hundred forty-seven million, four hundred ninety thousand, four hundred twenty-five".