140625287 has 4 divisors (see below), whose sum is σ = 153409416. Its totient is φ = 127841160.

The previous prime is 140625283. The next prime is 140625301. The reversal of 140625287 is 782526041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140625287 - 2² = 140625283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140625281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6392048 + ... + 6392069.

It is an arithmetic number, because the mean of its divisors is an integer number (38352354).

Almost surely, 2^140625287 is an apocalyptic number.

140625287 is a deficient number, since it is larger than the sum of its proper divisors (12784129).

140625287 is a wasteful number, since it uses less digits than its factorization.

140625287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12784128.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 140625287 is about 11858.5533266078. The cubic root of 140625287 is about 520.0213095311.

The spelling of 140625287 in words is "one hundred forty million, six hundred twenty-five thousand, two hundred eighty-seven".