828725069 has 2 divisors, whose sum is σ = 828725070. Its totient is φ = 828725068.

The previous prime is 828725057. The next prime is 828725113. The reversal of 828725069 is 960527828.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 503463844 + 325261225 = 22438^2 + 18035^2 .

It is a cyclic number.

It is not a de Polignac number, because 828725069 - 2²⁴ = 811947853 is a prime.

It is a super-2 number, since 2×828725069² = 1373570479978109522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828725669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414362534 + 414362535.

It is an arithmetic number, because the mean of its divisors is an integer number (414362535).

Almost surely, 2^828725069 is an apocalyptic number.

It is an amenable number.

828725069 is a deficient number, since it is larger than the sum of its proper divisors (1).

828725069 is an equidigital number, since it uses as much as digits as its factorization.

828725069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 828725069 is about 28787.5853277068. The cubic root of 828725069 is about 939.2982044846.

The spelling of 828725069 in words is "eight hundred twenty-eight million, seven hundred twenty-five thousand, sixty-nine".