82506025 has 24 divisors (see below), whose sum is σ = 117353600. Its totient is φ = 56367360.

The previous prime is 82506023. The next prime is 82506029. The reversal of 82506025 is 52060528.

It is not a de Polignac number, because 82506025 - 2¹ = 82506023 is a prime.

It is a super-2 number, since 2×82506025² = 13614488322601250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 82505984 and 82506002.

It is not an unprimeable number, because it can be changed into a prime (82506023) 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, 58276 + ... + 59674.

Almost surely, 2^82506025 is an apocalyptic number.

It is an amenable number.

82506025 is a deficient number, since it is larger than the sum of its proper divisors (34847575).

82506025 is a wasteful number, since it uses less digits than its factorization.

82506025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 82506025 is about 9083.2827215715. The cubic root of 82506025 is about 435.3399817130.

The spelling of 82506025 in words is "eighty-two million, five hundred six thousand, twenty-five".