247290425 has 12 divisors (see below), whose sum is σ = 314928876. Its totient is φ = 192484800.

The previous prime is 247290413. The next prime is 247290437. The reversal of 247290425 is 524092742.

It is an interprime number because it is at equal distance from previous prime (247290413) and next prime (247290437).

It can be written as a sum of positive squares in 6 ways, for example, as 35617024 + 211673401 = 5968^2 + 14549^2 .

It is not a de Polignac number, because 247290425 - 2¹² = 247286329 is a prime.

It is a super-2 number, since 2×247290425² = 122305108593361250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132746 + ... + 134595.

It is an arithmetic number, because the mean of its divisors is an integer number (26244073).

Almost surely, 2^247290425 is an apocalyptic number.

247290425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

247290425 is a deficient number, since it is larger than the sum of its proper divisors (67638451).

247290425 is a wasteful number, since it uses less digits than its factorization.

247290425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267388 (or 267383 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 247290425 is about 15725.4705811941. The cubic root of 247290425 is about 627.6763523952.

The spelling of 247290425 in words is "two hundred forty-seven million, two hundred ninety thousand, four hundred twenty-five".