247925641 has 4 divisors (see below), whose sum is σ = 254626372. Its totient is φ = 241224912.

The previous prime is 247925627. The next prime is 247925651. The reversal of 247925641 is 146529742.

247925641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 201753616 + 46172025 = 14204^2 + 6795^2 .

It is a cyclic number.

It is not a de Polignac number, because 247925641 - 2¹¹ = 247923593 is a prime.

It is a super-2 number, since 2×247925641² = 122934246930521762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 247925594 and 247925603.

It is not an unprimeable number, because it can be changed into a prime (247925651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3350310 + ... + 3350383.

It is an arithmetic number, because the mean of its divisors is an integer number (63656593).

Almost surely, 2^247925641 is an apocalyptic number.

It is an amenable number.

247925641 is a deficient number, since it is larger than the sum of its proper divisors (6700731).

247925641 is an equidigital number, since it uses as much as digits as its factorization.

247925641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6700730.

The product of its digits is 120960, while the sum is 40.

The square root of 247925641 is about 15745.6546704162. The cubic root of 247925641 is about 628.2133312111.

The spelling of 247925641 in words is "two hundred forty-seven million, nine hundred twenty-five thousand, six hundred forty-one".