40225949 has 4 divisors (see below), whose sum is σ = 40250364. Its totient is φ = 40201536.

The previous prime is 40225943. The next prime is 40225957. The reversal of 40225949 is 94952204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15405625 + 24820324 = 3925^2 + 4982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40225949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40225943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9542 + ... + 13095.

It is an arithmetic number, because the mean of its divisors is an integer number (10062591).

Almost surely, 2^40225949 is an apocalyptic number.

It is an amenable number.

40225949 is a deficient number, since it is larger than the sum of its proper divisors (24415).

40225949 is a wasteful number, since it uses less digits than its factorization.

40225949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24414.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 40225949 is about 6342.3930026450. The cubic root of 40225949 is about 342.6379262275.

The spelling of 40225949 in words is "forty million, two hundred twenty-five thousand, nine hundred forty-nine".