82780162025 has 24 divisors (see below), whose sum is σ = 113556178368. Its totient is φ = 59355800000.

The previous prime is 82780162013. The next prime is 82780162037. The reversal of 82780162025 is 52026108728.

It is an interprime number because it is at equal distance from previous prime (82780162013) and next prime (82780162037).

It is not a de Polignac number, because 82780162025 - 2²² = 82775967721 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2100326 + ... + 2139375.

It is an arithmetic number, because the mean of its divisors is an integer number (4731507432).

Almost surely, 2^82780162025 is an apocalyptic number.

It is an amenable number.

82780162025 is a deficient number, since it is larger than the sum of its proper divisors (30776016343).

82780162025 is a wasteful number, since it uses less digits than its factorization.

82780162025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4239793 (or 4239788 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 82780162025 in words is "eighty-two billion, seven hundred eighty million, one hundred sixty-two thousand, twenty-five".