245402085 has 16 divisors (see below), whose sum is σ = 399081600. Its totient is φ = 128735040.

The previous prime is 245402083. The next prime is 245402117. The reversal of 245402085 is 580204542.

It is not a de Polignac number, because 245402085 - 2¹ = 245402083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245402083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133185 + ... + 135014.

It is an arithmetic number, because the mean of its divisors is an integer number (24942600).

Almost surely, 2^245402085 is an apocalyptic number.

It is an amenable number.

245402085 is a deficient number, since it is larger than the sum of its proper divisors (153679515).

245402085 is a wasteful number, since it uses less digits than its factorization.

245402085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268268.

The product of its (nonzero) digits is 12800, while the sum is 30.

The square root of 245402085 is about 15665.3147111700. The cubic root of 245402085 is about 626.0745971932.

The spelling of 245402085 in words is "two hundred forty-five million, four hundred two thousand, eighty-five".