40813525 has 12 divisors (see below), whose sum is σ = 50836900. Its totient is φ = 32503680.

The previous prime is 40813511. The next prime is 40813537. The reversal of 40813525 is 52531804.

It can be written as a sum of positive squares in 6 ways, for example, as 1387684 + 39425841 = 1178^2 + 6279^2 .

It is not a de Polignac number, because 40813525 - 2⁷ = 40813397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40813493 and 40813502.

It is a congruent 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, 2161 + ... + 9289.

Almost surely, 2^40813525 is an apocalyptic number.

It is an amenable number.

40813525 is a deficient number, since it is larger than the sum of its proper divisors (10023375).

40813525 is a wasteful number, since it uses less digits than its factorization.

40813525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7368 (or 7363 counting only the distinct ones).

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

The square root of 40813525 is about 6388.5463917858. The cubic root of 40813525 is about 344.2981601239.

The spelling of 40813525 in words is "forty million, eight hundred thirteen thousand, five hundred twenty-five".