40820525 has 6 divisors (see below), whose sum is σ = 50617482. Its totient is φ = 32656400.

The previous prime is 40820503. The next prime is 40820537. The reversal of 40820525 is 52502804.

It can be written as a sum of positive squares in 3 ways, for example, as 90601 + 40729924 = 301^2 + 6382^2 .

It is not a de Polignac number, because 40820525 - 2²⁴ = 24043309 is a prime.

It is a super-2 number, since 2×40820525² = 3332630522551250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40820494 and 40820503.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 816386 + ... + 816435.

It is an arithmetic number, because the mean of its divisors is an integer number (8436247).

Almost surely, 2^40820525 is an apocalyptic number.

It is an amenable number.

40820525 is a deficient number, since it is larger than the sum of its proper divisors (9796957).

40820525 is a wasteful number, since it uses less digits than its factorization.

40820525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632831 (or 1632826 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 40820525 is about 6389.0942237535. The cubic root of 40820525 is about 344.3178427278.

The spelling of 40820525 in words is "forty million, eight hundred twenty thousand, five hundred twenty-five".