825603403 has 2 divisors, whose sum is σ = 825603404. Its totient is φ = 825603402.

The previous prime is 825603353. The next prime is 825603473. The reversal of 825603403 is 304306528.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 825603403 - 2²¹ = 823506251 is a prime.

It is equal to p_42394333 and since 825603403 and 42394333 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (825603473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412801701 + 412801702.

It is an arithmetic number, because the mean of its divisors is an integer number (412801702).

Almost surely, 2^825603403 is an apocalyptic number.

825603403 is a deficient number, since it is larger than the sum of its proper divisors (1).

825603403 is an equidigital number, since it uses as much as digits as its factorization.

825603403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 825603403 is about 28733.3152107445. The cubic root of 825603403 is about 938.1173284737.

The spelling of 825603403 in words is "eight hundred twenty-five million, six hundred three thousand, four hundred three".