287662725 has 96 divisors (see below), whose sum is σ = 630435840. Its totient is φ = 125737920.

The previous prime is 287662721. The next prime is 287662807. The reversal of 287662725 is 527266782.

It is not a de Polignac number, because 287662725 - 2² = 287662721 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287662721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 107352 + ... + 109998.

It is an arithmetic number, because the mean of its divisors is an integer number (6567040).

Almost surely, 2^287662725 is an apocalyptic number.

287662725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287662725 is an abundant number, since it is smaller than the sum of its proper divisors (342773115).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

287662725 is a wasteful number, since it uses less digits than its factorization.

287662725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696 (or 2685 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 287662725 is about 16960.6227774808. The cubic root of 287662725 is about 660.1275579899.

The spelling of 287662725 in words is "two hundred eighty-seven million, six hundred sixty-two thousand, seven hundred twenty-five".