825412641 has 4 divisors (see below), whose sum is σ = 1100550192. Its totient is φ = 550275092.

The previous prime is 825412591. The next prime is 825412667. The reversal of 825412641 is 146214528.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 825412641 - 2⁹ = 825412129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (825412691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137568771 + ... + 137568776.

It is an arithmetic number, because the mean of its divisors is an integer number (275137548).

Almost surely, 2^825412641 is an apocalyptic number.

It is an amenable number.

825412641 is a deficient number, since it is larger than the sum of its proper divisors (275137551).

825412641 is a wasteful number, since it uses less digits than its factorization.

825412641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275137550.

The product of its digits is 15360, while the sum is 33.

The square root of 825412641 is about 28729.9954925162. The cubic root of 825412641 is about 938.0450698396.

The spelling of 825412641 in words is "eight hundred twenty-five million, four hundred twelve thousand, six hundred forty-one".