40778325 has 72 divisors (see below), whose sum is σ = 88440768. Its totient is φ = 17533440.

The previous prime is 40778293. The next prime is 40778327. The reversal of 40778325 is 52387704.

It is not a de Polignac number, because 40778325 - 2⁵ = 40778293 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40778325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40778327) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 26014 + ... + 27536.

It is an arithmetic number, because the mean of its divisors is an integer number (1228344).

Almost surely, 2^40778325 is an apocalyptic number.

40778325 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40778325 is an abundant number, since it is smaller than the sum of its proper divisors (47662443).

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

40778325 is a wasteful number, since it uses less digits than its factorization.

40778325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563 (or 1555 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 40778325 is about 6385.7908672302. The cubic root of 40778325 is about 344.1991506163.

The spelling of 40778325 in words is "forty million, seven hundred seventy-eight thousand, three hundred twenty-five".