85398290250 has 384 divisors, whose sum is σ = 273303942912. Its totient is φ = 17594841600.

The previous prime is 85398290213. The next prime is 85398290273. The reversal of 85398290250 is 5209289358.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 85398290193 and 85398290202.

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 191 ways as a sum of consecutive naturals, for example, 20541172 + ... + 20545328.

It is an arithmetic number, because the mean of its divisors is an integer number (711729018).

Almost surely, 2^85398290250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85398290250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136651971456).

85398290250 is an abundant number, since it is smaller than the sum of its proper divisors (187905652662).

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

85398290250 is a wasteful number, since it uses less digits than its factorization.

85398290250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4247 (or 4230 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 51.

The spelling of 85398290250 in words is "eighty-five billion, three hundred ninety-eight million, two hundred ninety thousand, two hundred fifty".