825303491 has 2 divisors, whose sum is σ = 825303492. Its totient is φ = 825303490.

The previous prime is 825303469. The next prime is 825303509. The reversal of 825303491 is 194303528.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-825303491 is a prime.

It is a super-2 number, since 2×825303491² = 1362251704513574162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (825303461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 412651745 + 412651746.

It is an arithmetic number, because the mean of its divisors is an integer number (412651746).

Almost surely, 2^825303491 is an apocalyptic number.

825303491 is a deficient number, since it is larger than the sum of its proper divisors (1).

825303491 is an equidigital number, since it uses as much as digits as its factorization.

825303491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 825303491 is about 28728.0958470971. The cubic root of 825303491 is about 938.0037199629.

The spelling of 825303491 in words is "eight hundred twenty-five million, three hundred three thousand, four hundred ninety-one".