247930725 has 24 divisors (see below), whose sum is σ = 468472000. Its totient is φ = 113339520.

The previous prime is 247930721. The next prime is 247930729. The reversal of 247930725 is 527039742.

It is an interprime number because it is at equal distance from previous prime (247930721) and next prime (247930729).

It is not a de Polignac number, because 247930725 - 2² = 247930721 is a prime.

It is a super-2 number, since 2×247930725² = 122939288798051250, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247930721) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 235600 + ... + 236649.

Almost surely, 2^247930725 is an apocalyptic number.

247930725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

247930725 is a deficient number, since it is larger than the sum of its proper divisors (220541275).

247930725 is a wasteful number, since it uses less digits than its factorization.

247930725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472269 (or 472264 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 247930725 is about 15745.8161109547. The cubic root of 247930725 is about 628.2176252603.

The spelling of 247930725 in words is "two hundred forty-seven million, nine hundred thirty thousand, seven hundred twenty-five".