780826725 has 72 divisors (see below), whose sum is σ = 1641660800. Its totient is φ = 347276160.

The previous prime is 780826693. The next prime is 780826759. The reversal of 780826725 is 527628087.

780826725 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 780826725 - 2⁵ = 780826693 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 51576 + ... + 64974.

Almost surely, 2^780826725 is an apocalyptic number.

780826725 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

780826725 is an abundant number, since it is smaller than the sum of its proper divisors (860834075).

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

780826725 is a wasteful number, since it uses less digits than its factorization.

780826725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13459 (or 13451 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 780826725 is about 27943.2769195025. The cubic root of 780826725 is about 920.8415130459.

The spelling of 780826725 in words is "seven hundred eighty million, eight hundred twenty-six thousand, seven hundred twenty-five".