825278061 has 8 divisors (see below), whose sum is σ = 1116794464. Its totient is φ = 541973520.

The previous prime is 825278033. The next prime is 825278087. The reversal of 825278061 is 160872528.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 825278061 - 2²⁵ = 791723629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825278021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2052730 + ... + 2053131.

It is an arithmetic number, because the mean of its divisors is an integer number (139599308).

Almost surely, 2^825278061 is an apocalyptic number.

It is an amenable number.

825278061 is a deficient number, since it is larger than the sum of its proper divisors (291516403).

825278061 is a wasteful number, since it uses less digits than its factorization.

825278061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105931.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 825278061 is about 28727.6532456099. The cubic root of 825278061 is about 937.9940856567.

The spelling of 825278061 in words is "eight hundred twenty-five million, two hundred seventy-eight thousand, sixty-one".