781925260 has 48 divisors (see below), whose sum is σ = 1702229760. Its totient is φ = 301351680.

The previous prime is 781925239. The next prime is 781925269. The reversal of 781925260 is 62529187.

It is a super-2 number, since 2×781925260² = 1222814224452135200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (781925269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350950 + ... + 353170.

It is an arithmetic number, because the mean of its divisors is an integer number (35463120).

Almost surely, 2^781925260 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 781925260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851114880).

781925260 is an abundant number, since it is smaller than the sum of its proper divisors (920304500).

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

781925260 is a wasteful number, since it uses less digits than its factorization.

781925260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2866 (or 2864 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 781925260 is about 27962.9265278154. The cubic root of 781925260 is about 921.2731506842.

The spelling of 781925260 in words is "seven hundred eighty-one million, nine hundred twenty-five thousand, two hundred sixty".