247249925 has 12 divisors (see below), whose sum is σ = 330174180. Its totient is φ = 182584320.

The previous prime is 247249913. The next prime is 247249927. The reversal of 247249925 is 529942742.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1324801 + 245925124 = 1151^2 + 15682^2 .

It is not a de Polignac number, because 247249925 - 2⁸ = 247249669 is a prime.

It is a super-2 number, since 2×247249925² = 122265050825011250, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247249927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 380060 + ... + 380709.

It is an arithmetic number, because the mean of its divisors is an integer number (27514515).

Almost surely, 2^247249925 is an apocalyptic number.

247249925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

247249925 is a deficient number, since it is larger than the sum of its proper divisors (82924255).

247249925 is a wasteful number, since it uses less digits than its factorization.

247249925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760792 (or 760787 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 247249925 is about 15724.1828086550. The cubic root of 247249925 is about 627.6420846172.

The spelling of 247249925 in words is "two hundred forty-seven million, two hundred forty-nine thousand, nine hundred twenty-five".