40525649 has 8 divisors (see below), whose sum is σ = 41925888. Its totient is φ = 39131280.

The previous prime is 40525643. The next prime is 40525669. The reversal of 40525649 is 94652504.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40525649 - 2⁴ = 40525633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40525643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16094 + ... + 18440.

It is an arithmetic number, because the mean of its divisors is an integer number (5240736).

Almost surely, 2^40525649 is an apocalyptic number.

It is an amenable number.

40525649 is a deficient number, since it is larger than the sum of its proper divisors (1400239).

40525649 is a wasteful number, since it uses less digits than its factorization.

40525649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 40525649 is about 6365.9758874818. The cubic root of 40525649 is about 343.4867532096.

The spelling of 40525649 in words is "forty million, five hundred twenty-five thousand, six hundred forty-nine".