699725250 has 256 divisors, whose sum is σ = 2264371200. Its totient is φ = 156600000.

The previous prime is 699725249. The next prime is 699725261. The reversal of 699725250 is 52527996.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 699725196 and 699725205.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2787625 + ... + 2787875.

It is an arithmetic number, because the mean of its divisors is an integer number (8845200).

Almost surely, 2^699725250 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699725250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1132185600).

699725250 is an abundant number, since it is smaller than the sum of its proper divisors (1564645950).

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

699725250 is a wasteful number, since it uses less digits than its factorization.

699725250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 699725250 is about 26452.3203141048. The cubic root of 699725250 is about 887.7878191005.

The spelling of 699725250 in words is "six hundred ninety-nine million, seven hundred twenty-five thousand, two hundred fifty".