898725505 has 24 divisors (see below), whose sum is σ = 1118287800. Its totient is φ = 693189120.

The previous prime is 898725491. The next prime is 898725547. The reversal of 898725505 is 505527898.

It can be written as a sum of positive squares in 12 ways, for example, as 78074896 + 820650609 = 8836^2 + 28647^2 .

It is not a de Polignac number, because 898725505 - 2⁵ = 898725473 is a prime.

It is a congruent number.

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, 856221 + ... + 857269.

It is an arithmetic number, because the mean of its divisors is an integer number (46595325).

Almost surely, 2^898725505 is an apocalyptic number.

It is an amenable number.

898725505 is a deficient number, since it is larger than the sum of its proper divisors (219562295).

898725505 is a wasteful number, since it uses less digits than its factorization.

898725505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 49.

The square root of 898725505 is about 29978.7508912563. The cubic root of 898725505 is about 965.0334243481.

The spelling of 898725505 in words is "eight hundred ninety-eight million, seven hundred twenty-five thousand, five hundred five".