287149925225 has 12 divisors (see below), whose sum is σ = 356187150480. Its totient is φ = 229641718800.

The previous prime is 287149925189. The next prime is 287149925281. The reversal of 287149925225 is 522529941782.

It is a de Polignac number, because none of the positive numbers 2^k-287149925225 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1880591 + ... + 2027540.

It is an arithmetic number, because the mean of its divisors is an integer number (29682262540).

Almost surely, 2^287149925225 is an apocalyptic number.

287149925225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287149925225 is a deficient number, since it is larger than the sum of its proper divisors (69037225255).

287149925225 is a wasteful number, since it uses less digits than its factorization.

287149925225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911080 (or 3911075 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 56.

The spelling of 287149925225 in words is "two hundred eighty-seven billion, one hundred forty-nine million, nine hundred twenty-five thousand, two hundred twenty-five".