40398425 has 12 divisors (see below), whose sum is σ = 51710976. Its totient is φ = 31275600.

The previous prime is 40398401. The next prime is 40398433. The reversal of 40398425 is 52489304.

40398425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40398425 - 2¹⁸ = 40136281 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25289 + ... + 26838.

It is an arithmetic number, because the mean of its divisors is an integer number (4309248).

Almost surely, 2^40398425 is an apocalyptic number.

It is an amenable number.

40398425 is a deficient number, since it is larger than the sum of its proper divisors (11312551).

40398425 is a wasteful number, since it uses less digits than its factorization.

40398425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52168 (or 52163 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 40398425 is about 6355.9755348805. The cubic root of 40398425 is about 343.1269352569.

The spelling of 40398425 in words is "forty million, three hundred ninety-eight thousand, four hundred twenty-five".