40825421 has 8 divisors (see below), whose sum is σ = 50246784. Its totient is φ = 32301360.

The previous prime is 40825403. The next prime is 40825439. The reversal of 40825421 is 12452804.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40825403) and next prime (40825439).

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

It is not a de Polignac number, because 40825421 - 2¹⁸ = 40563277 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40825451) 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, 224225 + ... + 224406.

It is an arithmetic number, because the mean of its divisors is an integer number (6280848).

Almost surely, 2^40825421 is an apocalyptic number.

It is an amenable number.

40825421 is a deficient number, since it is larger than the sum of its proper divisors (9421363).

40825421 is a wasteful number, since it uses less digits than its factorization.

40825421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448651.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 40825421 is about 6389.4773651685. The cubic root of 40825421 is about 344.3316079662.

The spelling of 40825421 in words is "forty million, eight hundred twenty-five thousand, four hundred twenty-one".