825455387 has 4 divisors (see below), whose sum is σ = 830016096. Its totient is φ = 820894680.

The previous prime is 825455347. The next prime is 825455401. The reversal of 825455387 is 783554528.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 825455387 - 2¹⁴ = 825439003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (825455327) 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, 2280083 + ... + 2280444.

It is an arithmetic number, because the mean of its divisors is an integer number (207504024).

Almost surely, 2^825455387 is an apocalyptic number.

825455387 is a deficient number, since it is larger than the sum of its proper divisors (4560709).

825455387 is a wasteful number, since it uses less digits than its factorization.

825455387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4560708.

The product of its digits is 1344000, while the sum is 47.

The square root of 825455387 is about 28730.7394092112. The cubic root of 825455387 is about 938.0612625414.

The spelling of 825455387 in words is "eight hundred twenty-five million, four hundred fifty-five thousand, three hundred eighty-seven".