82515025 has 24 divisors (see below), whose sum is σ = 111849984. Its totient is φ = 60115200.

The previous prime is 82515023. The next prime is 82515029. The reversal of 82515025 is 52051528.

It is not a de Polignac number, because 82515025 - 2¹ = 82515023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82514984 and 82515002.

It is not an unprimeable number, because it can be changed into a prime (82515023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10044 + ... + 16306.

It is an arithmetic number, because the mean of its divisors is an integer number (4660416).

Almost surely, 2^82515025 is an apocalyptic number.

82515025 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

82515025 is a deficient number, since it is larger than the sum of its proper divisors (29334959).

82515025 is a wasteful number, since it uses less digits than its factorization.

82515025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6321 (or 6316 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 82515025 is about 9083.7781236664. The cubic root of 82515025 is about 435.3558105262.

The spelling of 82515025 in words is "eighty-two million, five hundred fifteen thousand, twenty-five".