40257525 has 48 divisors (see below), whose sum is σ = 82994688. Its totient is φ = 16728000.

The previous prime is 40257509. The next prime is 40257527. The reversal of 40257525 is 52575204.

It is not a de Polignac number, because 40257525 - 2⁴ = 40257509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40257492 and 40257501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40257527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2290 + ... + 9260.

It is an arithmetic number, because the mean of its divisors is an integer number (1729056).

Almost surely, 2^40257525 is an apocalyptic number.

It is an amenable number.

40257525 is an abundant number, since it is smaller than the sum of its proper divisors (42737163).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40257525 is a wasteful number, since it uses less digits than its factorization.

40257525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7002 (or 6997 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 30.

The square root of 40257525 is about 6344.8817955893. The cubic root of 40257525 is about 342.7275558139.

The spelling of 40257525 in words is "forty million, two hundred fifty-seven thousand, five hundred twenty-five".