828774879825 has 12 divisors (see below), whose sum is σ = 1370241134768. Its totient is φ = 442013269200.

The previous prime is 828774879811. The next prime is 828774879839. The reversal of 828774879825 is 528978477828.

It is an interprime number because it is at equal distance from previous prime (828774879811) and next prime (828774879839).

It is not a de Polignac number, because 828774879825 - 2⁴ = 828774879809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75), and also a Moran number because the ratio is a prime number: 11050331731 = 828774879825 / (8 + 2 + 8 + 7 + 7 + 4 + 8 + 7 + 9 + 8 + 2 + 5).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5525165791 + ... + 5525165940.

Almost surely, 2^828774879825 is an apocalyptic number.

It is an amenable number.

828774879825 is a deficient number, since it is larger than the sum of its proper divisors (541466254943).

828774879825 is a wasteful number, since it uses less digits than its factorization.

828774879825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11050331744 (or 11050331739 counting only the distinct ones).

The product of its digits is 1011548160, while the sum is 75.

The spelling of 828774879825 in words is "eight hundred twenty-eight billion, seven hundred seventy-four million, eight hundred seventy-nine thousand, eight hundred twenty-five".