825074421 has 16 divisors (see below), whose sum is σ = 1108388736. Its totient is φ = 545918976.

The previous prime is 825074401. The next prime is 825074429. The reversal of 825074421 is 124470528.

It is not a de Polignac number, because 825074421 - 2¹⁴ = 825058037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (825074429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289821 + ... + 292653.

It is an arithmetic number, because the mean of its divisors is an integer number (69274296).

Almost surely, 2^825074421 is an apocalyptic number.

It is an amenable number.

825074421 is a deficient number, since it is larger than the sum of its proper divisors (283314315).

825074421 is a wasteful number, since it uses less digits than its factorization.

825074421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 825074421 is about 28724.1087067989. The cubic root of 825074421 is about 937.9169282969.

The spelling of 825074421 in words is "eight hundred twenty-five million, seventy-four thousand, four hundred twenty-one".