40257925 has 12 divisors (see below), whose sum is σ = 50031520. Its totient is φ = 32134320.

The previous prime is 40257913. The next prime is 40257937. The reversal of 40257925 is 52975204.

It is an interprime number because it is at equal distance from previous prime (40257913) and next prime (40257937).

It is not a de Polignac number, because 40257925 - 2¹⁹ = 39733637 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11536 + ... + 14614.

Almost surely, 2^40257925 is an apocalyptic number.

It is an amenable number.

40257925 is a deficient number, since it is larger than the sum of its proper divisors (9773595).

40257925 is a wasteful number, since it uses less digits than its factorization.

40257925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612 (or 3607 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 40257925 is about 6344.9133169808. The cubic root of 40257925 is about 342.7286909273.

The spelling of 40257925 in words is "forty million, two hundred fifty-seven thousand, nine hundred twenty-five".