287222425 has 24 divisors (see below), whose sum is σ = 416973312. Its totient is φ = 192144000.

The previous prime is 287222393. The next prime is 287222431. The reversal of 287222425 is 524222782.

It is not a de Polignac number, because 287222425 - 2⁵ = 287222393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12841 + ... + 27190.

It is an arithmetic number, because the mean of its divisors is an integer number (17373888).

Almost surely, 2^287222425 is an apocalyptic number.

287222425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

287222425 is a deficient number, since it is larger than the sum of its proper divisors (129750887).

287222425 is a wasteful number, since it uses less digits than its factorization.

287222425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40089 (or 40084 counting only the distinct ones).

The product of its digits is 35840, while the sum is 34.

The square root of 287222425 is about 16947.6377409951. The cubic root of 287222425 is about 659.7905863009.

The spelling of 287222425 in words is "two hundred eighty-seven million, two hundred twenty-two thousand, four hundred twenty-five".