40305825 has 72 divisors (see below), whose sum is σ = 83540288. Its totient is φ = 18195840.

The previous prime is 40305817. The next prime is 40305833. The reversal of 40305825 is 52850304.

It is an interprime number because it is at equal distance from previous prime (40305817) and next prime (40305833).

It is not a de Polignac number, because 40305825 - 2³ = 40305817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 247194 + ... + 247356.

Almost surely, 2^40305825 is an apocalyptic number.

40305825 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40305825 is an abundant number, since it is smaller than the sum of its proper divisors (43234463).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40305825 is a wasteful number, since it uses less digits than its factorization.

40305825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 335 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 40305825 is about 6348.6868721020. The cubic root of 40305825 is about 342.8645664315.

The spelling of 40305825 in words is "forty million, three hundred five thousand, eight hundred twenty-five".