247085847425 has 6 divisors (see below), whose sum is σ = 306386450838. Its totient is φ = 197668677920.

The previous prime is 247085847409. The next prime is 247085847427. The reversal of 247085847425 is 524748580742.

It can be written as a sum of positive squares in 3 ways, for example, as 18709862656 + 228375984769 = 136784^2 + 477887^2 .

It is not a de Polignac number, because 247085847425 - 2⁴ = 247085847409 is a prime.

It is a super-2 number, since 2×247085847425² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247085847427) 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, 4941716924 + ... + 4941716973.

It is an arithmetic number, because the mean of its divisors is an integer number (51064408473).

Almost surely, 2^247085847425 is an apocalyptic number.

247085847425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

247085847425 is a deficient number, since it is larger than the sum of its proper divisors (59300603413).

247085847425 is an equidigital number, since it uses as much as digits as its factorization.

247085847425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9883433907 (or 9883433902 counting only the distinct ones).

The product of its (nonzero) digits is 20070400, while the sum is 56.

The spelling of 247085847425 in words is "two hundred forty-seven billion, eighty-five million, eight hundred forty-seven thousand, four hundred twenty-five".